Da Vinci Clinical Data Exchange (CDex)
2.1.0 - STU 2.1 United States of America flag

Da Vinci Clinical Data Exchange (CDex), published by HL7 International / Payer/Provider Information Exchange Work Group. This guide is not an authorized publication; it is the continuous build for version 2.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/davinci-ecdx/ and changes regularly. See the Directory of published versions

Resource Profile: CDexTaskDataRequest - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 2

Definitions for the cdex-task-data-request resource profile.

Guidance on how to interpret the contents of this table can be found here

0. Task
Definition

This Task profile is used by the CDex Data Consumer (e.g. Payer or other Provider) to solicit information from a Data Source (e.g., Provider) asynchronously where human involvement to find/aggregate/filter/approve requests may be required.

Invariantscdex-7: If code = "data-request-code", must have one "code" input. (Task.code.coding.code.where($this='data-request-code').exists() implies Task.input.type.coding.code.where($this='data-code').exists())
cdex-12: If code = "data-request-query", must have one "query" input. (Task.code.coding.code.where($this='data-request-query').exists() implies Task.input.type.coding.code.where($this='data-query').exists())
cdex-8: If code = "data-request-questionnaire", must have one "questionnaire" input. (Task.code.coding.code.where($this='data-request-questionnaire').exists() implies Task.input.type.coding.code.where($this='questionnaire').exists())
cdex-9: Must have exactly one input that is data-query or data-code or questionnaire (Task.input.type.coding.code.where($this='data-query' or $this='data-code' or $this='questionnaire').count()=1)
tdr-2: Task statusReason SHALL be populated if status is 'rejected' or 'failed' ((status = 'rejected' or status = 'failed') implies statusReason.exists())
tdr-3: Task output SHALL be populated if status is 'completed' ((status = 'completed') implies output.exists())
cdex-11: If code = "data-request-questionnaire" and status = "completed", should have one "questionnaire-response" output referencing the QuestionnaireResponse. ((Task.code.coding.code.where($this='data-request-questionnaire').exists() and Task.status.where($this='completed').exists()) implies Task.output.type.coding.code.where($this='questionnaire-response').exists())
2. Task.meta
4. Task.meta.tag
SlicingThis element introduces a set of slices on Task.meta.tag. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ $this
  • 6. Task.meta.tag.system
    Control1..?
    8. Task.meta.tag.code
    Control1..?
    10. Task.meta.tag:work-queue
    Slice Namework-queue
    Definition

    Data Consumer provided work queue tags that providers may use in their workflow to process requests.

    ShortWork Queue Tag
    BindingThe codes SHALL be taken from CDex Work Queue Value Set
    (required to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-work-queue)
    12. Task.identifier
    NoteThis is a business identifier, not a resource identifier (see discussion)
    Must Supporttrue
    14. Task.basedOn
    ShortAuthorization for data request
    Must Supporttrue
    Requirements

    Indicates the order (ServiceRequest, CommunicationRequest, etc.) that authorizes the data request

    16. Task.status
    BindingThe codes SHALL be taken from HRex Task Status ValueSet
    (required to http://hl7.org/fhir/us/davinci-hrex/ValueSet/hrex-task-status)
    Must Supporttrue
    18. Task.statusReason
    Must Supporttrue
    Requirements

    Indicates why task failed or was rejected.

    20. Task.statusReason.text
    Control1..?
    Must Supporttrue
    22. Task.businessStatus
    ShortFor example, 'waiting on internal review'
    Comments

    Conveys the internal business progress of the request and provides more nuance than the overall status. There is no expectation this will be coded, but negotiation of agreed codes can be used between partners

    Must Supporttrue
    Requirements

    Indicates progress in retrieving the data

    24. Task.businessStatus.text
    Control1..?
    Must Supporttrue
    26. Task.intent
    Must Supporttrue
    Fixed Valueorder
    28. Task.code
    Definition

    The code element is used to indicate that Task is a request for data and whether the data request is FHIR query syntax, a code, or a questionnaire. The code element is a required element and must be populated with one of the following values: "data-request-query", data-request-code", or "data-request-questionnaire".

    Shortdata-request-query | data-request-code | data-request-questionnaire
    Control1..?
    This element is affected by the following invariants: cdex-7, cdex-8, cdex-11, cdex-12
    BindingThe codes SHALL be taken from CDex Data Request Task Code Value Set
    (required to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-data-request-task-code)
    Must Supporttrue
    30. Task.code.coding
    Control1..?
    Must Supporttrue
    32. Task.code.coding.system
    Must Supporttrue
    Fixed Valuehttp://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp
    34. Task.code.coding.code
    Control1..?
    Must Supporttrue
    36. Task.focus
    ShortWhat task is acting on
    Control0..0
    38. Task.for
    ShortMember (i.e., patient) being queried
    Comments

    Queries must always be in the scope of a single member

    Control1..?
    TypeReference(US Core Patient Profile, US Core Patient Profile, US Core Patient Profile)
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    40. Task.for.identifier
    Definition

    business identifier representing the Patient

    ShortPatient Member ID
    NoteThis is a business identifier, not a resource identifier (see discussion)
    Must Supporttrue
    42. Task.authoredOn
    Control1..?
    Must Supporttrue
    44. Task.requester
    ShortWho is asking for data
    Control1..?
    TypeReference(US Core Practitioner Profile, US Core Practitioner Profile, US Core Practitioner Profile, HRex Organization Profile)
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    46. Task.requester.identifier
    Definition

    business identifier representing the Data Consumer

    ShortData Consumer ID
    NoteThis is a business identifier, not a resource identifier (see discussion)
    Must Supporttrue
    48. Task.owner
    ShortWho is being asked for data
    Control1..?
    TypeReference(US Core Practitioner Profile, US Core Practitioner Profile, US Core Practitioner Profile, HRex Organization Profile)
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    50. Task.owner.identifier
    Definition

    business identifier representing the Provider

    ShortProvider ID
    NoteThis is a business identifier, not a resource identifier (see discussion)
    Must Supporttrue
    52. Task.reasonCode
    Comments

    Only text is expected, though codes can be used for partners with agreed value sets

    Must Supporttrue
    Requirements

    Indicates why the information request is occurring

    54. Task.reasonCode.text
    Control1..?
    Must Supporttrue
    56. Task.reasonReference
    Comments

    Example targets would be HRex Coverage, PCDE Claim (for prior authorization) or a bare Claim resource for referencing an actual Claim.

    TypeReference(Claim, Coverage, US Core Coverage Profile, US Core Coverage Profile)
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    Requirements

    Indicates why the information request is occurring

    58. Task.reasonReference.identifier
    Definition

    business identifier representing the coverage, claim, or prior-authorization ID

    ShortCoverage or Claim ID
    Comments

    Most payer systems will not expose their claim and prior authorization records as a FHIR resource. They will provide a unique business identifier for the claim or prior authorization using Task.reasonReference.identifier. This could be a payer-assigned or provider-assigned identifier which SHOULD be communicated in Task.reasonReference.identifier.type using the "FILL" for the payer and "PLAC" for the provider.

    NoteThis is a business identifier, not a resource identifier (see discussion)
    Must Supporttrue
    60. Task.input
    Control1..?
    Must Supporttrue
    SlicingThis element introduces a set of slices on Task.input. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ type
    • 62. Task.input:query
      Slice Namequery
      Definition

      Indicates the specific FHIR RESTful query to be executed

      ShortRequested query
      Comments

      This will contain the text that should go after the '?' when executing the query.

      Control0..1
      This element is affected by the following invariants: cdex-9, cdex-12
      Must Supporttrue
      64. Task.input:query.type
      Must Supporttrue
      Pattern Value{
        "coding" : [{
          "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
          "code" : "data-query"
        }]
      }
      66. Task.input:query.value[x]
      Shortquery value
      Typestring
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      68. Task.input:code
      Slice Namecode
      Definition

      A code indicating the type of data/document to be returned

      ShortRequested data code
      Comments

      This might be a document code or other code describing the requested information. If no appropriate standard code exists, local codes may be used between partners, or a human-readable textual description of the desired data can be provided. Downstream profiles may tighten expectations for this element.

      Control0..1
      This element is affected by the following invariants: cdex-7, cdex-9
      Must Supporttrue
      70. Task.input:code.type
      Must Supporttrue
      Pattern Value{
        "coding" : [{
          "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
          "code" : "data-code"
        }]
      }
      72. Task.input:code.value[x]
      Shortquery value
      Control1..1
      BindingUnless not suitable, these codes SHALL be taken from US Core DocumentReference Type
      (extensible to http://hl7.org/fhir/us/core/ValueSet/us-core-documentreference-type)
      TypeCodeableConcept
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Must Supporttrue
      74. Task.input:questionnaire
      Slice Namequestionnaire
      Definition

      Indicates the questionnaire to be completed.

      ShortData Request questionnaire
      Control0..1
      This element is affected by the following invariants: cdex-8, cdex-9
      76. Task.input:questionnaire.type
      Control1..1
      TypeCodeableConcept
      Pattern Value{
        "coding" : [{
          "system" : "http://hl7.org/fhir/uv/sdc/CodeSystem/temp",
          "code" : "questionnaire"
        }]
      }
      78. Task.input:questionnaire.value[x]
      ShortURL
      Control1..1
      Typecanonical(DTR Standard Questionnaire, DTR Questionnaire for adaptive form)
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      80. Task.input:questionnaire.value[x].extension:questionnaireDisplay
      Slice NamequestionnaireDisplay
      Comments

      This can be handy for commonly used questionnaires with a recognizable name.

      Control0..1
      TypeExtension(Display Name) (Extension Type: string)
      82. Task.input:signature
      Slice Namesignature
      Definition

      Flag to indicate whether the requested data requires a signature.

      ShortSignature flag
      Control0..1
      Must Supporttrue
      84. Task.input:signature.type
      Must Supporttrue
      Pattern Value{
        "coding" : [{
          "system" : "http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp",
          "code" : "signature-flag"
        }]
      }
      86. Task.input:signature.value[x]
      ShortSignature flag value
      Typeboolean
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      88. Task.input:POU
      Slice NamePOU
      Definition

      Represent the purpose of use for the requested data.

      ShortPurpose of use code
      Control0..1
      90. Task.input:POU.type
      Pattern Value{
        "coding" : [{
          "system" : "http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp",
          "code" : "purpose-of-use"
        }]
      }
      92. Task.input:POU.value[x]
      ShortPurpose of use value
      BindingUnless not suitable, these codes SHALL be taken from CDex Purpose of Use Value Set
      (extensible to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-POU)
      TypeCodeableConcept
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      94. Task.output
      Must Supporttrue
      SlicingThis element introduces a set of slices on Task.output. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ type
      • 96. Task.output:data
        Slice Namedata
        Definition

        The data content requested. Multiple repetitions are permitted in the event that a single request returns multiple instances and packaging in a Bundle is not necessary/appropriate. Also, in most cases Provenance instances should accompany returned data so that the requester can best integrate and allocate trust/confidence to the provided data.

        ShortRequested data
        Must Supporttrue
        98. Task.output:data.type
        Must Supporttrue
        Pattern Value{
          "coding" : [{
            "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
            "code" : "data-value"
          }]
        }
        100. Task.output:data.value[x]
        Shortdata reference
        Comments

        The referenced data might be contained within the Task (if it doesn't have/shouldn't have independent persistence), but can also refer to data stored elsewhere - either on the owner's system or some other system. Note that all returned data SHOULD comply with appropriate US-Core and/or Da Vinci profiles. The "questionnaire-response" output type is for a QuestionnaireResponse resulting from the request.

        TypeReference
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        Must Supporttrue
        102. Task.output:response
        Slice Nameresponse
        Definition

        Indicates the questionnaire response resulting from the request.

        Control0..1
        This element is affected by the following invariants: cdex-11
        104. Task.output:response.type
        TypeCodeableConcept
        Pattern Value{
          "coding" : [{
            "system" : "http://hl7.org/fhir/uv/sdc/CodeSystem/temp",
            "code" : "questionnaire-response"
          }]
        }
        106. Task.output:response.value[x]
        ShortReference to the QuestionnaireResponse
        Control1..1
        TypeReference(CDex SDC QuestionnaireResponse Profile, Adaptive Questionnaire Response)
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]

        Guidance on how to interpret the contents of this table can be found here

        0. Task
        Definition

        This Task profile is used by the CDex Data Consumer (e.g. Payer or other Provider) to solicit information from a Data Source (e.g., Provider) asynchronously where human involvement to find/aggregate/filter/approve requests may be required.


        A task to be performed.

        ShortA task to be performed
        Control0..*
        Is Modifierfalse
        Summaryfalse
        Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
        dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
        dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
        dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
        dom-6: A resource should have narrative for robust management (text.`div`.exists())
        inv-1: Last modified date must be greater than or equal to authored-on date. (lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn)
        cdex-7: If code = "data-request-code", must have one "code" input. (Task.code.coding.code.where($this='data-request-code').exists() implies Task.input.type.coding.code.where($this='data-code').exists())
        cdex-12: If code = "data-request-query", must have one "query" input. (Task.code.coding.code.where($this='data-request-query').exists() implies Task.input.type.coding.code.where($this='data-query').exists())
        cdex-8: If code = "data-request-questionnaire", must have one "questionnaire" input. (Task.code.coding.code.where($this='data-request-questionnaire').exists() implies Task.input.type.coding.code.where($this='questionnaire').exists())
        cdex-9: Must have exactly one input that is data-query or data-code or questionnaire (Task.input.type.coding.code.where($this='data-query' or $this='data-code' or $this='questionnaire').count()=1)
        tdr-2: Task statusReason SHALL be populated if status is 'rejected' or 'failed' ((status = 'rejected' or status = 'failed') implies statusReason.exists())
        tdr-3: Task output SHALL be populated if status is 'completed' ((status = 'completed') implies output.exists())
        cdex-11: If code = "data-request-questionnaire" and status = "completed", should have one "questionnaire-response" output referencing the QuestionnaireResponse. ((Task.code.coding.code.where($this='data-request-questionnaire').exists() and Task.status.where($this='completed').exists()) implies Task.output.type.coding.code.where($this='questionnaire-response').exists())
        inv-1: Last modified date must be greater than or equal to authored-on date. (lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn)
        2. Task.meta
        Definition

        The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

        ShortMetadata about the resource
        Control0..1
        TypeMeta
        Is Modifierfalse
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        4. Task.meta.tag
        Definition

        Tags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource.

        ShortTags applied to this resource
        Comments

        The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored.

        Control0..*
        BindingFor example codes, see CommonTagshttp://hl7.org/fhir/ValueSet/common-tags
        (example to http://hl7.org/fhir/ValueSet/common-tags)

        Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".

        TypeCoding
        Is Modifierfalse
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        SlicingThis element introduces a set of slices on Task.meta.tag. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ $this
        • 6. Task.meta.tag.system
          Definition

          The identification of the code system that defines the meaning of the symbol in the code.

          ShortIdentity of the terminology system
          Comments

          The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

          Control10..1
          Typeuri
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          Need to be unambiguous about the source of the definition of the symbol.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          8. Task.meta.tag.code
          Definition

          A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

          ShortSymbol in syntax defined by the system
          Control10..1
          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          Need to refer to a particular code in the system.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          10. Task.meta.tag:work-queue
          Slice Namework-queue
          Definition

          Data Consumer provided work queue tags that providers may use in their workflow to process requests.


          Tags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource.

          ShortWork Queue TagTags applied to this resource
          Comments

          The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored.

          Control0..*
          BindingThe codes SHALL be taken from For example codes, see CDex Work Queue Value Sethttp://hl7.org/fhir/ValueSet/common-tags
          (required to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-work-queue)
          TypeCoding
          Is Modifierfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          12. Task.implicitRules
          Definition

          A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

          ShortA set of rules under which this content was created
          Comments

          Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

          Control0..1
          Typeuri
          Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          14. Task.modifierExtension
          Definition

          May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

          ShortExtensions that cannot be ignored
          Comments

          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

          Control0..*
          TypeExtension
          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
          Summaryfalse
          Requirements

          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

          Alternate Namesextensions, user content
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
          16. Task.identifier
          Definition

          The business identifier for this task.

          ShortTask Instance Identifier
          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..*
          TypeIdentifier
          Is Modifierfalse
          Must Supporttrue
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          18. Task.basedOn
          Definition

          BasedOn refers to a higher-level authorization that triggered the creation of the task. It references a "request" resource such as a ServiceRequest, MedicationRequest, ServiceRequest, CarePlan, etc. which is distinct from the "request" resource the task is seeking to fulfill. This latter resource is referenced by FocusOn. For example, based on a ServiceRequest (= BasedOn), a task is created to fulfill a procedureRequest ( = FocusOn ) to collect a specimen from a patient.

          ShortAuthorization for data requestRequest fulfilled by this task
          Control0..*
          TypeReference(Resource)
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          Indicates the order (ServiceRequest, CommunicationRequest, etc.) that authorizes the data request

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          20. Task.status
          Definition

          The current status of the task.

          Shortdraft | requested | received | accepted | +
          Control1..1
          This element is affected by the following invariants: tdr-2, tdr-3, cdex-11
          BindingThe codes SHALL be taken from HRex Task Status ValueSethttp://hl7.org/fhir/ValueSet/task-status|4.0.1
          (required to http://hl7.org/fhir/us/davinci-hrex/ValueSet/hrex-task-status)
          Typecode
          Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          22. Task.statusReason
          Definition

          An explanation as to why this task is held, failed, was refused, etc.

          ShortReason for current status
          Comments

          This applies to the current status. Look at the history of the task to see reasons for past statuses.

          Control0..1
          This element is affected by the following invariants: tdr-2
          Binding

          Codes to identify the reason for current status. These will typically be specific to a particular workflow.

          TypeCodeableConcept
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          Indicates why task failed or was rejected.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          24. Task.statusReason.text
          Definition

          A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

          ShortPlain text representation of the concept
          Comments

          Very often the text is the same as a displayName of one of the codings.

          Control10..1
          Typestring
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          26. Task.businessStatus
          Definition

          Contains business-specific nuances of the business state.

          ShortFor example, 'waiting on internal review'E.g. "Specimen collected", "IV prepped"
          Comments

          Conveys the internal business progress of the request and provides more nuance than the overall status. There is no expectation this will be coded, but negotiation of agreed codes can be used between partners

          Control0..1
          Binding

          The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.

          TypeCodeableConcept
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          Indicates progress in retrieving the data


          There's often a need to track substates of a task - this is often variable by specific workflow implementation.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          28. Task.businessStatus.text
          Definition

          A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

          ShortPlain text representation of the concept
          Comments

          Very often the text is the same as a displayName of one of the codings.

          Control10..1
          Typestring
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          30. Task.intent
          Definition

          Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc.

          Shortunknown | proposal | plan | order | original-order | reflex-order | filler-order | instance-order | option
          Comments

          This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances.

          In most cases, Tasks will have an intent of "order".

          Control1..1
          BindingThe codes SHALL be taken from TaskIntenthttp://hl7.org/fhir/ValueSet/task-intent|4.0.1
          (required to http://hl7.org/fhir/ValueSet/task-intent|4.0.1)

          Distinguishes whether the task is a proposal, plan or full order.

          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Fixed Valueorder
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          32. Task.code
          Definition

          The code element is used to indicate that Task is a request for data and whether the data request is FHIR query syntax, a code, or a questionnaire. The code element is a required element and must be populated with one of the following values: "data-request-query", data-request-code", or "data-request-questionnaire".


          A name or code (or both) briefly describing what the task involves.

          Shortdata-request-query | data-request-code | data-request-questionnaireTask Type
          Comments

          The title (eg "My Tasks", "Outstanding Tasks for Patient X") should go into the code.

          Control10..1
          This element is affected by the following invariants: cdex-7, cdex-8, cdex-11, cdex-12
          BindingThe codes SHALL be taken from For example codes, see CDex Data Request Task Code Value Sethttp://hl7.org/fhir/ValueSet/task-code
          (required to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-data-request-task-code)
          TypeCodeableConcept
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          34. Task.code.coding
          Definition

          A reference to a code defined by a terminology system.

          ShortCode defined by a terminology system
          Comments

          Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

          Control10..*
          TypeCoding
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          Allows for alternative encodings within a code system, and translations to other code systems.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          36. Task.code.coding.system
          Definition

          The identification of the code system that defines the meaning of the symbol in the code.

          ShortIdentity of the terminology system
          Comments

          The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

          Control0..1
          Typeuri
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          Need to be unambiguous about the source of the definition of the symbol.

          Fixed Valuehttp://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          38. Task.code.coding.code
          Definition

          A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

          ShortSymbol in syntax defined by the system
          Control10..1
          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          Need to refer to a particular code in the system.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          40. Task.focus
          Definition

          The request being actioned or the resource being manipulated by this task.

          ShortWhat task is acting on
          Comments

          If multiple resources need to be manipulated, use sub-tasks. (This ensures that status can be tracked independently for each referenced resource.).

          Control0..01
          TypeReference(Resource)
          Is Modifierfalse
          Summarytrue
          Requirements

          Used to identify the thing to be done.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          42. Task.for
          Definition

          The entity who benefits from the performance of the service specified in the task (e.g., the patient).

          ShortMember (i.e., patient) being queriedBeneficiary of the Task
          Comments

          Queries must always be in the scope of a single member

          Control10..1
          TypeReference(US Core Patient Profile, US Core Patient Profile, US Core Patient Profile, Resource)
          Is Modifierfalse
          Must Supporttrue
          Must Support TypesNo must-support rules about the choice of types/profiles
          Summarytrue
          Requirements

          Used to track tasks outstanding for a beneficiary. Do not use to track the task owner or creator (see owner and creator respectively). This can also affect access control.

          Alternate NamesPatient
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          44. Task.for.identifier
          Definition

          business identifier representing the Patient


          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

          ShortPatient Member IDLogical reference, when literal reference is not known
          Comments

          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..1
          TypeIdentifier
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          46. Task.authoredOn
          Definition

          The date and time this task was created.

          ShortTask Creation Date
          Control10..1
          This element is affected by the following invariants: inv-1
          TypedateTime
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summaryfalse
          Requirements

          Most often used along with lastUpdated to track duration of task to supporting monitoring and management.

          Alternate NamesCreated Date
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          48. Task.requester
          Definition

          The creator of the task.

          ShortWho is asking for dataWho is asking for task to be done
          Control10..1
          TypeReference(US Core Practitioner Profile, US Core Practitioner Profile, US Core Practitioner Profile, HRex Organization Profile, Device, Organization, Patient, Practitioner, PractitionerRole, RelatedPerson)
          Is Modifierfalse
          Must Supporttrue
          Must Support TypesNo must-support rules about the choice of types/profiles
          Summarytrue
          Requirements

          Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task).

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          50. Task.requester.identifier
          Definition

          business identifier representing the Data Consumer


          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

          ShortData Consumer IDLogical reference, when literal reference is not known
          Comments

          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..1
          TypeIdentifier
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          52. Task.owner
          Definition

          Individual organization or Device currently responsible for task execution.

          ShortWho is being asked for dataResponsible individual
          Comments

          Tasks may be created with an owner not yet identified.

          Control10..1
          TypeReference(US Core Practitioner Profile, US Core Practitioner Profile, US Core Practitioner Profile, HRex Organization Profile, Practitioner, PractitionerRole, Organization, CareTeam, HealthcareService, Patient, Device, RelatedPerson)
          Is Modifierfalse
          Must Supporttrue
          Must Support TypesNo must-support rules about the choice of types/profiles
          Summarytrue
          Requirements

          Identifies who is expected to perform this task.

          Alternate NamesPerformer, Executer
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          54. Task.owner.identifier
          Definition

          business identifier representing the Provider


          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

          ShortProvider IDLogical reference, when literal reference is not known
          Comments

          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..1
          TypeIdentifier
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          56. Task.reasonCode
          Definition

          A description or code indicating why this task needs to be performed.

          ShortWhy task is needed
          Comments

          Only text is expected, though codes can be used for partners with agreed value sets


          This should only be included if there is no focus or if it differs from the reason indicated on the focus.

          Control0..1
          Binding

          Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.

          TypeCodeableConcept
          Is Modifierfalse
          Must Supporttrue
          Summaryfalse
          Requirements

          Indicates why the information request is occurring

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          58. Task.reasonCode.text
          Definition

          A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

          ShortPlain text representation of the concept
          Comments

          Very often the text is the same as a displayName of one of the codings.

          Control10..1
          Typestring
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          60. Task.reasonReference
          Definition

          A resource reference indicating why this task needs to be performed.

          ShortWhy task is needed
          Comments

          Example targets would be HRex Coverage, PCDE Claim (for prior authorization) or a bare Claim resource for referencing an actual Claim.


          Tasks might be justified based on an Observation, a Condition, a past or planned procedure, etc. This should only be included if there is no focus or if it differs from the reason indicated on the focus. Use the CodeableConcept text element in Task.reasonCode if the data is free (uncoded) text.

          Control0..1
          TypeReference(Claim, Coverage, US Core Coverage Profile, US Core Coverage Profile, Resource)
          Is Modifierfalse
          Must Supporttrue
          Must Support TypesNo must-support rules about the choice of types/profiles
          Summaryfalse
          Requirements

          Indicates why the information request is occurring

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          62. Task.reasonReference.identifier
          Definition

          business identifier representing the coverage, claim, or prior-authorization ID


          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

          ShortCoverage or Claim IDLogical reference, when literal reference is not known
          Comments

          Most payer systems will not expose their claim and prior authorization records as a FHIR resource. They will provide a unique business identifier for the claim or prior authorization using Task.reasonReference.identifier. This could be a payer-assigned or provider-assigned identifier which SHOULD be communicated in Task.reasonReference.identifier.type using the "FILL" for the payer and "PLAC" for the provider.


          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

          NoteThis is a business identifier, not a resource identifier (see discussion)
          Control0..1
          TypeIdentifier
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          64. Task.input
          Definition

          Additional information that may be needed in the execution of the task.

          ShortInformation used to perform task
          Control10..*
          TypeBackboneElement
          Is Modifierfalse
          Must Supporttrue
          Summaryfalse
          Requirements

          Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

          Alternate NamesSupporting Information
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          SlicingThis element introduces a set of slices on Task.input. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ type
          • 66. Task.input.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            68. Task.input.type
            Definition

            A code or description indicating how the input is intended to be used as part of the task execution.

            ShortLabel for the input
            Comments

            If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

            Control1..1
            Binding

            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Requirements

            Inputs are named to enable task automation to bind data and pass it from one task to the next.

            Alternate NamesName
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            70. Task.input.value[x]
            Definition

            The value of the input parameter as a basic type.

            ShortContent to use in performing the task
            Control1..1
            TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            72. Task.input:query
            Slice Namequery
            Definition

            Indicates the specific FHIR RESTful query to be executed


            Additional information that may be needed in the execution of the task.

            ShortRequested queryInformation used to perform task
            Comments

            This will contain the text that should go after the '?' when executing the query.

            Control0..1*
            This element is affected by the following invariants: cdex-9, cdex-12
            TypeBackboneElement
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

            Alternate NamesSupporting Information
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            74. Task.input:query.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            76. Task.input:query.type
            Definition

            A code or description indicating how the input is intended to be used as part of the task execution.

            ShortLabel for the input
            Comments

            If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

            Control1..1
            Binding

            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Inputs are named to enable task automation to bind data and pass it from one task to the next.

            Alternate NamesName
            Pattern Value{
              "coding" : [{
                "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
                "code" : "data-query"
              }]
            }
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            78. Task.input:query.value[x]
            Definition

            The value of the input parameter as a basic type.

            Shortquery valueContent to use in performing the task
            Control1..1
            Typestring, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supporttrue
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            80. Task.input:code
            Slice Namecode
            Definition

            A code indicating the type of data/document to be returned


            Additional information that may be needed in the execution of the task.

            ShortRequested data codeInformation used to perform task
            Comments

            This might be a document code or other code describing the requested information. If no appropriate standard code exists, local codes may be used between partners, or a human-readable textual description of the desired data can be provided. Downstream profiles may tighten expectations for this element.

            Control0..1*
            This element is affected by the following invariants: cdex-7, cdex-9
            TypeBackboneElement
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

            Alternate NamesSupporting Information
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            82. Task.input:code.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            84. Task.input:code.type
            Definition

            A code or description indicating how the input is intended to be used as part of the task execution.

            ShortLabel for the input
            Comments

            If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

            Control1..1
            Binding

            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Inputs are named to enable task automation to bind data and pass it from one task to the next.

            Alternate NamesName
            Pattern Value{
              "coding" : [{
                "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
                "code" : "data-code"
              }]
            }
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            86. Task.input:code.value[x]
            Definition

            The value of the input parameter as a basic type.

            Shortquery valueContent to use in performing the task
            Control1..1
            BindingUnless not suitable, these codes SHALL be taken from For codes, see US Core DocumentReference Type
            (extensible to http://hl7.org/fhir/us/core/ValueSet/us-core-documentreference-type)
            TypeCodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            88. Task.input:questionnaire
            Slice Namequestionnaire
            Definition

            Indicates the questionnaire to be completed.


            Additional information that may be needed in the execution of the task.

            ShortData Request questionnaireInformation used to perform task
            Control0..1*
            This element is affected by the following invariants: cdex-8, cdex-9
            TypeBackboneElement
            Is Modifierfalse
            Summaryfalse
            Requirements

            Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

            Alternate NamesSupporting Information
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            90. Task.input:questionnaire.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            92. Task.input:questionnaire.type
            Definition

            A code or description indicating how the input is intended to be used as part of the task execution.

            ShortLabel for the input
            Comments

            If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

            Control1..1
            Binding

            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Requirements

            Inputs are named to enable task automation to bind data and pass it from one task to the next.

            Alternate NamesName
            Pattern Value{
              "coding" : [{
                "system" : "http://hl7.org/fhir/uv/sdc/CodeSystem/temp",
                "code" : "questionnaire"
              }]
            }
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            94. Task.input:questionnaire.value[x]
            Definition

            The value of the input parameter as a basic type.

            ShortURLContent to use in performing the task
            Control1..1
            Typecanonical(DTR Standard Questionnaire, DTR Questionnaire for adaptive form), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            96. Task.input:questionnaire.value[x].extension:questionnaireDisplay
            Slice NamequestionnaireDisplay
            Definition

            The title or other name to display when referencing a resource by canonical URL.

            ShortDisplay name for canonical reference
            Comments

            This can be handy for commonly used questionnaires with a recognizable name.

            Control0..1
            TypeExtension(Display Name) (Extension Type: string)
            Is Modifierfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            98. Task.input:signature
            Slice Namesignature
            Definition

            Flag to indicate whether the requested data requires a signature.


            Additional information that may be needed in the execution of the task.

            ShortSignature flagInformation used to perform task
            Control0..1*
            TypeBackboneElement
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

            Alternate NamesSupporting Information
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            100. Task.input:signature.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            102. Task.input:signature.type
            Definition

            A code or description indicating how the input is intended to be used as part of the task execution.

            ShortLabel for the input
            Comments

            If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

            Control1..1
            Binding

            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Inputs are named to enable task automation to bind data and pass it from one task to the next.

            Alternate NamesName
            Pattern Value{
              "coding" : [{
                "system" : "http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp",
                "code" : "signature-flag"
              }]
            }
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            104. Task.input:signature.value[x]
            Definition

            The value of the input parameter as a basic type.

            ShortSignature flag valueContent to use in performing the task
            Control1..1
            Typeboolean, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, Expression, Signature, unsignedInt, time
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supporttrue
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            106. Task.input:POU
            Slice NamePOU
            Definition

            Represent the purpose of use for the requested data.


            Additional information that may be needed in the execution of the task.

            ShortPurpose of use codeInformation used to perform task
            Control0..1*
            TypeBackboneElement
            Is Modifierfalse
            Summaryfalse
            Requirements

            Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

            Alternate NamesSupporting Information
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            108. Task.input:POU.modifierExtension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            Comments

            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            110. Task.input:POU.type
            Definition

            A code or description indicating how the input is intended to be used as part of the task execution.

            ShortLabel for the input
            Comments

            If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

            Control1..1
            Binding

            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

            TypeCodeableConcept
            Is Modifierfalse
            Summaryfalse
            Requirements

            Inputs are named to enable task automation to bind data and pass it from one task to the next.

            Alternate NamesName
            Pattern Value{
              "coding" : [{
                "system" : "http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp",
                "code" : "purpose-of-use"
              }]
            }
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            112. Task.input:POU.value[x]
            Definition

            The value of the input parameter as a basic type.

            ShortPurpose of use valueContent to use in performing the task
            Control1..1
            BindingUnless not suitable, these codes SHALL be taken from For codes, see CDex Purpose of Use Value Set
            (extensible to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-POU)
            TypeCodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            114. Task.output
            Definition

            Outputs produced by the Task.

            ShortInformation produced as part of task
            Control0..*
            This element is affected by the following invariants: tdr-3
            TypeBackboneElement
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Requirements

            Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            SlicingThis element introduces a set of slices on Task.output. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ type
            • 116. Task.output.modifierExtension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored even if unrecognized
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
              Summarytrue
              Requirements

              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

              Alternate Namesextensions, user content, modifiers
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              118. Task.output.type
              Definition

              The name of the Output parameter.

              ShortLabel for output
              Control1..1
              Binding

              Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

              TypeCodeableConcept
              Is Modifierfalse
              Summaryfalse
              Requirements

              Outputs are named to enable task automation to bind data and pass it from one task to the next.

              Alternate NamesName
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              120. Task.output.value[x]
              Definition

              The value of the Output parameter as a basic type.

              ShortResult of output
              Control1..1
              TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summaryfalse
              Requirements

              Task outputs can take any form.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              122. Task.output:data
              Slice Namedata
              Definition

              The data content requested. Multiple repetitions are permitted in the event that a single request returns multiple instances and packaging in a Bundle is not necessary/appropriate. Also, in most cases Provenance instances should accompany returned data so that the requester can best integrate and allocate trust/confidence to the provided data.


              Outputs produced by the Task.

              ShortRequested dataInformation produced as part of task
              Control0..*
              TypeBackboneElement
              Is Modifierfalse
              Must Supporttrue
              Summaryfalse
              Requirements

              Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              124. Task.output:data.modifierExtension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored even if unrecognized
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
              Summarytrue
              Requirements

              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

              Alternate Namesextensions, user content, modifiers
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              126. Task.output:data.type
              Definition

              The name of the Output parameter.

              ShortLabel for output
              Control1..1
              Binding

              Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

              TypeCodeableConcept
              Is Modifierfalse
              Must Supporttrue
              Summaryfalse
              Requirements

              Outputs are named to enable task automation to bind data and pass it from one task to the next.

              Alternate NamesName
              Pattern Value{
                "coding" : [{
                  "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
                  "code" : "data-value"
                }]
              }
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              128. Task.output:data.value[x]
              Definition

              The value of the Output parameter as a basic type.

              Shortdata referenceResult of output
              Comments

              The referenced data might be contained within the Task (if it doesn't have/shouldn't have independent persistence), but can also refer to data stored elsewhere - either on the owner's system or some other system. Note that all returned data SHOULD comply with appropriate US-Core and/or Da Vinci profiles. The "questionnaire-response" output type is for a QuestionnaireResponse resulting from the request.

              Control1..1
              TypeReference, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Must Supporttrue
              Summaryfalse
              Requirements

              Task outputs can take any form.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              130. Task.output:response
              Slice Nameresponse
              Definition

              Indicates the questionnaire response resulting from the request.


              Outputs produced by the Task.

              ShortInformation produced as part of task
              Control0..1*
              This element is affected by the following invariants: cdex-11
              TypeBackboneElement
              Is Modifierfalse
              Summaryfalse
              Requirements

              Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              132. Task.output:response.modifierExtension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored even if unrecognized
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
              Summarytrue
              Requirements

              Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

              Alternate Namesextensions, user content, modifiers
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              134. Task.output:response.type
              Definition

              The name of the Output parameter.

              ShortLabel for output
              Control1..1
              Binding

              Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

              TypeCodeableConcept
              Is Modifierfalse
              Summaryfalse
              Requirements

              Outputs are named to enable task automation to bind data and pass it from one task to the next.

              Alternate NamesName
              Pattern Value{
                "coding" : [{
                  "system" : "http://hl7.org/fhir/uv/sdc/CodeSystem/temp",
                  "code" : "questionnaire-response"
                }]
              }
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              136. Task.output:response.value[x]
              Definition

              The value of the Output parameter as a basic type.

              ShortReference to the QuestionnaireResponseResult of output
              Control1..1
              TypeReference(CDex SDC QuestionnaireResponse Profile, Adaptive Questionnaire Response), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summaryfalse
              Requirements

              Task outputs can take any form.

              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

              Guidance on how to interpret the contents of this table can be found here

              0. Task
              Definition

              This Task profile is used by the CDex Data Consumer (e.g. Payer or other Provider) to solicit information from a Data Source (e.g., Provider) asynchronously where human involvement to find/aggregate/filter/approve requests may be required.

              ShortA task to be performed
              Control0..*
              Is Modifierfalse
              Summaryfalse
              Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
              dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
              dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
              dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
              dom-6: A resource should have narrative for robust management (text.`div`.exists())
              inv-1: Last modified date must be greater than or equal to authored-on date. (lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn)
              cdex-7: If code = "data-request-code", must have one "code" input. (Task.code.coding.code.where($this='data-request-code').exists() implies Task.input.type.coding.code.where($this='data-code').exists())
              cdex-12: If code = "data-request-query", must have one "query" input. (Task.code.coding.code.where($this='data-request-query').exists() implies Task.input.type.coding.code.where($this='data-query').exists())
              cdex-8: If code = "data-request-questionnaire", must have one "questionnaire" input. (Task.code.coding.code.where($this='data-request-questionnaire').exists() implies Task.input.type.coding.code.where($this='questionnaire').exists())
              cdex-9: Must have exactly one input that is data-query or data-code or questionnaire (Task.input.type.coding.code.where($this='data-query' or $this='data-code' or $this='questionnaire').count()=1)
              tdr-2: Task statusReason SHALL be populated if status is 'rejected' or 'failed' ((status = 'rejected' or status = 'failed') implies statusReason.exists())
              tdr-3: Task output SHALL be populated if status is 'completed' ((status = 'completed') implies output.exists())
              cdex-11: If code = "data-request-questionnaire" and status = "completed", should have one "questionnaire-response" output referencing the QuestionnaireResponse. ((Task.code.coding.code.where($this='data-request-questionnaire').exists() and Task.status.where($this='completed').exists()) implies Task.output.type.coding.code.where($this='questionnaire-response').exists())
              2. Task.id
              Definition

              The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

              ShortLogical id of this artifact
              Comments

              The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

              Control0..1
              Typeid
              Is Modifierfalse
              Summarytrue
              4. Task.meta
              Definition

              The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

              ShortMetadata about the resource
              Control0..1
              TypeMeta
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              6. Task.meta.id
              Definition

              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

              ShortUnique id for inter-element referencing
              Control0..1
              Typestring
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              8. Task.meta.extension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              ShortAdditional content defined by implementations
              Comments

              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Alternate Namesextensions, user content
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              SlicingThis element introduces a set of slices on Task.meta.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ url
              • 10. Task.meta.versionId
                Definition

                The version specific identifier, as it appears in the version portion of the URL. This value changes when the resource is created, updated, or deleted.

                ShortVersion specific identifier
                Comments

                The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes.

                Control0..1
                Typeid
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                12. Task.meta.lastUpdated
                Definition

                When the resource last changed - e.g. when the version changed.

                ShortWhen the resource version last changed
                Comments

                This value is always populated except when the resource is first being created. The server / resource manager sets this value; what a client provides is irrelevant. This is equivalent to the HTTP Last-Modified and SHOULD have the same value on a read interaction.

                Control0..1
                Typeinstant
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                14. Task.meta.source
                Definition

                A uri that identifies the source system of the resource. This provides a minimal amount of Provenance information that can be used to track or differentiate the source of information in the resource. The source may identify another FHIR server, document, message, database, etc.

                ShortIdentifies where the resource comes from
                Comments

                In the provenance resource, this corresponds to Provenance.entity.what[x]. The exact use of the source (and the implied Provenance.entity.role) is left to implementer discretion. Only one nominated source is allowed; for additional provenance details, a full Provenance resource should be used.

                This element can be used to indicate where the current master source of a resource that has a canonical URL if the resource is no longer hosted at the canonical URL.

                Control0..1
                Typeuri
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                16. Task.meta.profile
                Definition

                A list of profiles (references to StructureDefinition resources) that this resource claims to conform to. The URL is a reference to StructureDefinition.url.

                ShortProfiles this resource claims to conform to
                Comments

                It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time. The list of profile URLs is a set.

                Control0..*
                Typecanonical(StructureDefinition)
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                18. Task.meta.security
                Definition

                Security labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure.

                ShortSecurity Labels applied to this resource
                Comments

                The security labels can be updated without changing the stated version of the resource. The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored.

                Control0..*
                BindingUnless not suitable, these codes SHALL be taken from All Security Labels
                (extensible to http://hl7.org/fhir/ValueSet/security-labels)

                Security Labels from the Healthcare Privacy and Security Classification System.

                TypeCoding
                Is Modifierfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                20. Task.meta.tag
                Definition

                Tags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource.

                ShortTags applied to this resource
                Comments

                The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored.

                Control0..*
                BindingFor example codes, see CommonTags
                (example to http://hl7.org/fhir/ValueSet/common-tags)

                Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".

                TypeCoding
                Is Modifierfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                SlicingThis element introduces a set of slices on Task.meta.tag. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • value @ $this
                • 22. Task.meta.tag.id
                  Definition

                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                  ShortUnique id for inter-element referencing
                  Control0..1
                  Typestring
                  Is Modifierfalse
                  XML FormatIn the XML format, this property is represented as an attribute.
                  Summaryfalse
                  24. Task.meta.tag.extension
                  Definition

                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                  ShortAdditional content defined by implementations
                  Comments

                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                  Control0..*
                  TypeExtension
                  Is Modifierfalse
                  Summaryfalse
                  Alternate Namesextensions, user content
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                  SlicingThis element introduces a set of slices on Task.meta.tag.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ url
                  • 26. Task.meta.tag.system
                    Definition

                    The identification of the code system that defines the meaning of the symbol in the code.

                    ShortIdentity of the terminology system
                    Comments

                    The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                    Control1..1
                    Typeuri
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    Need to be unambiguous about the source of the definition of the symbol.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    28. Task.meta.tag.version
                    Definition

                    The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                    ShortVersion of the system - if relevant
                    Comments

                    Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                    NoteThis is a business version Id, not a resource version Id (see discussion)
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    30. Task.meta.tag.code
                    Definition

                    A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                    ShortSymbol in syntax defined by the system
                    Control1..1
                    Typecode
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    Need to refer to a particular code in the system.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    32. Task.meta.tag.display
                    Definition

                    A representation of the meaning of the code in the system, following the rules of the system.

                    ShortRepresentation defined by the system
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    34. Task.meta.tag.userSelected
                    Definition

                    Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                    ShortIf this coding was chosen directly by the user
                    Comments

                    Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                    Control0..1
                    Typeboolean
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    36. Task.meta.tag:work-queue
                    Slice Namework-queue
                    Definition

                    Data Consumer provided work queue tags that providers may use in their workflow to process requests.

                    ShortWork Queue Tag
                    Comments

                    The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored.

                    Control0..*
                    BindingThe codes SHALL be taken from CDex Work Queue Value Set
                    (required to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-work-queue)
                    TypeCoding
                    Is Modifierfalse
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    38. Task.implicitRules
                    Definition

                    A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

                    ShortA set of rules under which this content was created
                    Comments

                    Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

                    Control0..1
                    Typeuri
                    Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    40. Task.language
                    Definition

                    The base language in which the resource is written.

                    ShortLanguage of the resource content
                    Comments

                    Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

                    Control0..1
                    BindingThe codes SHOULD be taken from CommonLanguages
                    (preferred to http://hl7.org/fhir/ValueSet/languages)

                    A human language.

                    Additional BindingsPurpose
                    AllLanguagesMax Binding
                    Typecode
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    42. Task.text
                    Definition

                    A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

                    ShortText summary of the resource, for human interpretation
                    Comments

                    Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

                    Control0..1
                    TypeNarrative
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesnarrative, html, xhtml, display
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    44. Task.contained
                    Definition

                    These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

                    ShortContained, inline Resources
                    Comments

                    This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

                    Control0..*
                    TypeResource
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesinline resources, anonymous resources, contained resources
                    46. Task.extension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                    ShortAdditional content defined by implementations
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesextensions, user content
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    48. Task.modifierExtension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                    ShortExtensions that cannot be ignored
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                    Summaryfalse
                    Requirements

                    Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                    Alternate Namesextensions, user content
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    50. Task.identifier
                    Definition

                    The business identifier for this task.

                    ShortTask Instance Identifier
                    NoteThis is a business identifier, not a resource identifier (see discussion)
                    Control0..*
                    TypeIdentifier
                    Is Modifierfalse
                    Must Supporttrue
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    52. Task.instantiatesCanonical
                    Definition

                    The URL pointing to a FHIR-defined protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Task.

                    ShortFormal definition of task
                    Control0..1
                    Typecanonical(ActivityDefinition)
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    Enables a formal definition of how he task is to be performed, enabling automation.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    54. Task.instantiatesUri
                    Definition

                    The URL pointing to an externally maintained protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Task.

                    ShortFormal definition of task
                    Control0..1
                    Typeuri
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    Enables a formal definition of how he task is to be performed (e.g. using BPMN, BPEL, XPDL or other formal notation to be associated with a task), enabling automation.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    56. Task.basedOn
                    Definition

                    BasedOn refers to a higher-level authorization that triggered the creation of the task. It references a "request" resource such as a ServiceRequest, MedicationRequest, ServiceRequest, CarePlan, etc. which is distinct from the "request" resource the task is seeking to fulfill. This latter resource is referenced by FocusOn. For example, based on a ServiceRequest (= BasedOn), a task is created to fulfill a procedureRequest ( = FocusOn ) to collect a specimen from a patient.

                    ShortAuthorization for data request
                    Control0..*
                    TypeReference(Resource)
                    Is Modifierfalse
                    Must Supporttrue
                    Summarytrue
                    Requirements

                    Indicates the order (ServiceRequest, CommunicationRequest, etc.) that authorizes the data request

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    58. Task.groupIdentifier
                    Definition

                    An identifier that links together multiple tasks and other requests that were created in the same context.

                    ShortRequisition or grouper id
                    Control0..1
                    TypeIdentifier
                    Is Modifierfalse
                    Summarytrue
                    Requirements

                    Billing and/or reporting can be linked to whether multiple requests were created as a single unit.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    60. Task.partOf
                    Definition

                    Task that this particular task is part of.

                    ShortComposite task
                    Comments

                    This should usually be 0..1.

                    Control0..*
                    TypeReference(Task)
                    Is Modifierfalse
                    Summarytrue
                    Requirements

                    Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task).

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    62. Task.status
                    Definition

                    The current status of the task.

                    Shortdraft | requested | received | accepted | +
                    Control1..1
                    This element is affected by the following invariants: tdr-2, tdr-3, cdex-11
                    BindingThe codes SHALL be taken from HRex Task Status ValueSet
                    (required to http://hl7.org/fhir/us/davinci-hrex/ValueSet/hrex-task-status)
                    Typecode
                    Is Modifiertrue because This element is labeled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Must Supporttrue
                    Summarytrue
                    Requirements

                    These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    64. Task.statusReason
                    Definition

                    An explanation as to why this task is held, failed, was refused, etc.

                    ShortReason for current status
                    Comments

                    This applies to the current status. Look at the history of the task to see reasons for past statuses.

                    Control0..1
                    This element is affected by the following invariants: tdr-2
                    Binding

                    Codes to identify the reason for current status. These will typically be specific to a particular workflow.

                    TypeCodeableConcept
                    Is Modifierfalse
                    Must Supporttrue
                    Summarytrue
                    Requirements

                    Indicates why task failed or was rejected.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    66. Task.statusReason.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    68. Task.statusReason.extension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                    ShortAdditional content defined by implementations
                    Comments

                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                    Control0..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesextensions, user content
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on Task.statusReason.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 70. Task.statusReason.coding
                      Definition

                      A reference to a code defined by a terminology system.

                      ShortCode defined by a terminology system
                      Comments

                      Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                      Control0..*
                      TypeCoding
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      Allows for alternative encodings within a code system, and translations to other code systems.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      72. Task.statusReason.text
                      Definition

                      A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                      ShortPlain text representation of the concept
                      Comments

                      Very often the text is the same as a displayName of one of the codings.

                      Control1..1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      74. Task.businessStatus
                      Definition

                      Contains business-specific nuances of the business state.

                      ShortFor example, 'waiting on internal review'
                      Comments

                      Conveys the internal business progress of the request and provides more nuance than the overall status. There is no expectation this will be coded, but negotiation of agreed codes can be used between partners

                      Control0..1
                      Binding

                      The domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc.

                      TypeCodeableConcept
                      Is Modifierfalse
                      Must Supporttrue
                      Summarytrue
                      Requirements

                      Indicates progress in retrieving the data

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      76. Task.businessStatus.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      78. Task.businessStatus.extension
                      Definition

                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                      ShortAdditional content defined by implementations
                      Comments

                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Alternate Namesextensions, user content
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      SlicingThis element introduces a set of slices on Task.businessStatus.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 80. Task.businessStatus.coding
                        Definition

                        A reference to a code defined by a terminology system.

                        ShortCode defined by a terminology system
                        Comments

                        Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                        Control0..*
                        TypeCoding
                        Is Modifierfalse
                        Summarytrue
                        Requirements

                        Allows for alternative encodings within a code system, and translations to other code systems.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        82. Task.businessStatus.text
                        Definition

                        A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                        ShortPlain text representation of the concept
                        Comments

                        Very often the text is the same as a displayName of one of the codings.

                        Control1..1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Must Supporttrue
                        Summarytrue
                        Requirements

                        The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        84. Task.intent
                        Definition

                        Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc.

                        Shortunknown | proposal | plan | order | original-order | reflex-order | filler-order | instance-order | option
                        Comments

                        This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances.

                        In most cases, Tasks will have an intent of "order".

                        Control1..1
                        BindingThe codes SHALL be taken from TaskIntent
                        (required to http://hl7.org/fhir/ValueSet/task-intent|4.0.1)

                        Distinguishes whether the task is a proposal, plan or full order.

                        Typecode
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Must Supporttrue
                        Summarytrue
                        Fixed Valueorder
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        86. Task.priority
                        Definition

                        Indicates how quickly the Task should be addressed with respect to other requests.

                        Shortroutine | urgent | asap | stat
                        Control0..1
                        BindingThe codes SHALL be taken from RequestPriority
                        (required to http://hl7.org/fhir/ValueSet/request-priority|4.0.1)

                        The task's priority.

                        Typecode
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Summaryfalse
                        Requirements

                        Used to identify the service level expected while performing a task.

                        Meaning if MissingIf missing, this task should be performed with normal priority
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        88. Task.code
                        Definition

                        The code element is used to indicate that Task is a request for data and whether the data request is FHIR query syntax, a code, or a questionnaire. The code element is a required element and must be populated with one of the following values: "data-request-query", data-request-code", or "data-request-questionnaire".

                        Shortdata-request-query | data-request-code | data-request-questionnaire
                        Comments

                        The title (eg "My Tasks", "Outstanding Tasks for Patient X") should go into the code.

                        Control1..1
                        This element is affected by the following invariants: cdex-7, cdex-8, cdex-11, cdex-12
                        BindingThe codes SHALL be taken from CDex Data Request Task Code Value Set
                        (required to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-data-request-task-code)
                        TypeCodeableConcept
                        Is Modifierfalse
                        Must Supporttrue
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        90. Task.code.id
                        Definition

                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                        ShortUnique id for inter-element referencing
                        Control0..1
                        Typestring
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        92. Task.code.extension
                        Definition

                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                        ShortAdditional content defined by implementations
                        Comments

                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                        Control0..*
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Alternate Namesextensions, user content
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        SlicingThis element introduces a set of slices on Task.code.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 94. Task.code.coding
                          Definition

                          A reference to a code defined by a terminology system.

                          ShortCode defined by a terminology system
                          Comments

                          Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                          Control1..*
                          TypeCoding
                          Is Modifierfalse
                          Must Supporttrue
                          Summarytrue
                          Requirements

                          Allows for alternative encodings within a code system, and translations to other code systems.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          96. Task.code.coding.id
                          Definition

                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                          ShortUnique id for inter-element referencing
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          98. Task.code.coding.extension
                          Definition

                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                          ShortAdditional content defined by implementations
                          Comments

                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                          Control0..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Alternate Namesextensions, user content
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                          SlicingThis element introduces a set of slices on Task.code.coding.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • value @ url
                          • 100. Task.code.coding.system
                            Definition

                            The identification of the code system that defines the meaning of the symbol in the code.

                            ShortIdentity of the terminology system
                            Comments

                            The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

                            Control0..1
                            Typeuri
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Must Supporttrue
                            Summarytrue
                            Requirements

                            Need to be unambiguous about the source of the definition of the symbol.

                            Fixed Valuehttp://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            102. Task.code.coding.version
                            Definition

                            The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.

                            ShortVersion of the system - if relevant
                            Comments

                            Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

                            NoteThis is a business version Id, not a resource version Id (see discussion)
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summarytrue
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            104. Task.code.coding.code
                            Definition

                            A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

                            ShortSymbol in syntax defined by the system
                            Control1..1
                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Must Supporttrue
                            Summarytrue
                            Requirements

                            Need to refer to a particular code in the system.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            106. Task.code.coding.display
                            Definition

                            A representation of the meaning of the code in the system, following the rules of the system.

                            ShortRepresentation defined by the system
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summarytrue
                            Requirements

                            Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            108. Task.code.coding.userSelected
                            Definition

                            Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).

                            ShortIf this coding was chosen directly by the user
                            Comments

                            Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

                            Control0..1
                            Typeboolean
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summarytrue
                            Requirements

                            This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            110. Task.code.text
                            Definition

                            A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                            ShortPlain text representation of the concept
                            Comments

                            Very often the text is the same as a displayName of one of the codings.

                            Control0..1
                            Typestring
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summarytrue
                            Requirements

                            The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            112. Task.description
                            Definition

                            A free-text description of what is to be performed.

                            ShortHuman-readable explanation of task
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summarytrue
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            114. Task.focus
                            Definition

                            The request being actioned or the resource being manipulated by this task.

                            ShortWhat task is acting on
                            Comments

                            If multiple resources need to be manipulated, use sub-tasks. (This ensures that status can be tracked independently for each referenced resource.).

                            Control0..0
                            TypeReference(Resource)
                            Is Modifierfalse
                            Summarytrue
                            Requirements

                            Used to identify the thing to be done.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            116. Task.for
                            Definition

                            The entity who benefits from the performance of the service specified in the task (e.g., the patient).

                            ShortMember (i.e., patient) being queried
                            Comments

                            Queries must always be in the scope of a single member

                            Control1..1
                            TypeReference(US Core Patient Profile, US Core Patient Profile, US Core Patient Profile)
                            Is Modifierfalse
                            Must Supporttrue
                            Must Support TypesNo must-support rules about the choice of types/profiles
                            Summarytrue
                            Requirements

                            Used to track tasks outstanding for a beneficiary. Do not use to track the task owner or creator (see owner and creator respectively). This can also affect access control.

                            Alternate NamesPatient
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            118. Task.for.id
                            Definition

                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                            ShortUnique id for inter-element referencing
                            Control0..1
                            Typestring
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            120. Task.for.extension
                            Definition

                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                            ShortAdditional content defined by implementations
                            Comments

                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                            Control0..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            SlicingThis element introduces a set of slices on Task.for.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ url
                            • 122. Task.for.reference
                              Definition

                              A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                              ShortLiteral reference, Relative, internal or absolute URL
                              Comments

                              Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                              Control0..1
                              This element is affected by the following invariants: ref-1
                              Typestring
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              124. Task.for.type
                              Definition

                              The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                              The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                              ShortType the reference refers to (e.g. "Patient")
                              Comments

                              This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                              Control0..1
                              BindingUnless not suitable, these codes SHALL be taken from ResourceType
                              (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                              Aa resource (or, for logical models, the URI of the logical model).

                              Typeuri
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              126. Task.for.identifier
                              Definition

                              business identifier representing the Patient

                              ShortPatient Member ID
                              Comments

                              When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                              When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                              Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                              Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                              NoteThis is a business identifier, not a resource identifier (see discussion)
                              Control0..1
                              TypeIdentifier
                              Is Modifierfalse
                              Must Supporttrue
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              128. Task.for.display
                              Definition

                              Plain text narrative that identifies the resource in addition to the resource reference.

                              ShortText alternative for the resource
                              Comments

                              This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                              Control0..1
                              Typestring
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              130. Task.encounter
                              Definition

                              The healthcare event (e.g. a patient and healthcare provider interaction) during which this task was created.

                              ShortHealthcare event during which this task originated
                              Control0..1
                              TypeReference(Encounter)
                              Is Modifierfalse
                              Summarytrue
                              Requirements

                              For some tasks it may be important to know the link between the encounter the task originated within.

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              132. Task.executionPeriod
                              Definition

                              Identifies the time action was first taken against the task (start) and/or the time final action was taken against the task prior to marking it as completed (end).

                              ShortStart and end time of execution
                              Control0..1
                              TypePeriod
                              Is Modifierfalse
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              134. Task.authoredOn
                              Definition

                              The date and time this task was created.

                              ShortTask Creation Date
                              Control1..1
                              This element is affected by the following invariants: inv-1
                              TypedateTime
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Must Supporttrue
                              Summaryfalse
                              Requirements

                              Most often used along with lastUpdated to track duration of task to supporting monitoring and management.

                              Alternate NamesCreated Date
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              136. Task.lastModified
                              Definition

                              The date and time of last modification to this task.

                              ShortTask Last Modified Date
                              Control0..1
                              This element is affected by the following invariants: inv-1
                              TypedateTime
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summarytrue
                              Requirements

                              Used along with history to track task activity and time in a particular task state. This enables monitoring and management.

                              Alternate NamesUpdate Date
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              138. Task.requester
                              Definition

                              The creator of the task.

                              ShortWho is asking for data
                              Control1..1
                              TypeReference(US Core Practitioner Profile, US Core Practitioner Profile, US Core Practitioner Profile, HRex Organization Profile)
                              Is Modifierfalse
                              Must Supporttrue
                              Must Support TypesNo must-support rules about the choice of types/profiles
                              Summarytrue
                              Requirements

                              Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task).

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              140. Task.requester.id
                              Definition

                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                              ShortUnique id for inter-element referencing
                              Control0..1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              142. Task.requester.extension
                              Definition

                              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                              ShortAdditional content defined by implementations
                              Comments

                              There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                              Control0..*
                              TypeExtension
                              Is Modifierfalse
                              Summaryfalse
                              Alternate Namesextensions, user content
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              SlicingThis element introduces a set of slices on Task.requester.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • value @ url
                              • 144. Task.requester.reference
                                Definition

                                A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                ShortLiteral reference, Relative, internal or absolute URL
                                Comments

                                Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                Control0..1
                                This element is affected by the following invariants: ref-1
                                Typestring
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                146. Task.requester.type
                                Definition

                                The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                ShortType the reference refers to (e.g. "Patient")
                                Comments

                                This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                Control0..1
                                BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                Aa resource (or, for logical models, the URI of the logical model).

                                Typeuri
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                148. Task.requester.identifier
                                Definition

                                business identifier representing the Data Consumer

                                ShortData Consumer ID
                                Comments

                                When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                NoteThis is a business identifier, not a resource identifier (see discussion)
                                Control0..1
                                TypeIdentifier
                                Is Modifierfalse
                                Must Supporttrue
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                150. Task.requester.display
                                Definition

                                Plain text narrative that identifies the resource in addition to the resource reference.

                                ShortText alternative for the resource
                                Comments

                                This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                Control0..1
                                Typestring
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                152. Task.performerType
                                Definition

                                The kind of participant that should perform the task.

                                ShortRequested performer
                                Control0..*
                                BindingThe codes SHOULD be taken from ProcedurePerformerRoleCodes
                                (preferred to http://hl7.org/fhir/ValueSet/performer-role)

                                The type(s) of task performers allowed.

                                TypeCodeableConcept
                                Is Modifierfalse
                                Summaryfalse
                                Requirements

                                Use to distinguish tasks on different activity queues.

                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                154. Task.owner
                                Definition

                                Individual organization or Device currently responsible for task execution.

                                ShortWho is being asked for data
                                Comments

                                Tasks may be created with an owner not yet identified.

                                Control1..1
                                TypeReference(US Core Practitioner Profile, US Core Practitioner Profile, US Core Practitioner Profile, HRex Organization Profile)
                                Is Modifierfalse
                                Must Supporttrue
                                Must Support TypesNo must-support rules about the choice of types/profiles
                                Summarytrue
                                Requirements

                                Identifies who is expected to perform this task.

                                Alternate NamesPerformer, Executer
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                156. Task.owner.id
                                Definition

                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                ShortUnique id for inter-element referencing
                                Control0..1
                                Typestring
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                158. Task.owner.extension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                ShortAdditional content defined by implementations
                                Comments

                                There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                Control0..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                SlicingThis element introduces a set of slices on Task.owner.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                • value @ url
                                • 160. Task.owner.reference
                                  Definition

                                  A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                  ShortLiteral reference, Relative, internal or absolute URL
                                  Comments

                                  Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                  Control0..1
                                  This element is affected by the following invariants: ref-1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  162. Task.owner.type
                                  Definition

                                  The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                  The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                  ShortType the reference refers to (e.g. "Patient")
                                  Comments

                                  This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                  Control0..1
                                  BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                  (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                  Aa resource (or, for logical models, the URI of the logical model).

                                  Typeuri
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  164. Task.owner.identifier
                                  Definition

                                  business identifier representing the Provider

                                  ShortProvider ID
                                  Comments

                                  When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                  When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                  Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                  Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                  NoteThis is a business identifier, not a resource identifier (see discussion)
                                  Control0..1
                                  TypeIdentifier
                                  Is Modifierfalse
                                  Must Supporttrue
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  166. Task.owner.display
                                  Definition

                                  Plain text narrative that identifies the resource in addition to the resource reference.

                                  ShortText alternative for the resource
                                  Comments

                                  This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  168. Task.location
                                  Definition

                                  Principal physical location where the this task is performed.

                                  ShortWhere task occurs
                                  Control0..1
                                  TypeReference(Location)
                                  Is Modifierfalse
                                  Summarytrue
                                  Requirements

                                  Ties the event to where the records are likely kept and provides context around the event occurrence (e.g. if it occurred inside or outside a dedicated healthcare setting).

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  170. Task.reasonCode
                                  Definition

                                  A description or code indicating why this task needs to be performed.

                                  ShortWhy task is needed
                                  Comments

                                  Only text is expected, though codes can be used for partners with agreed value sets

                                  Control0..1
                                  Binding

                                  Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.

                                  TypeCodeableConcept
                                  Is Modifierfalse
                                  Must Supporttrue
                                  Summaryfalse
                                  Requirements

                                  Indicates why the information request is occurring

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  172. Task.reasonCode.id
                                  Definition

                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                  ShortUnique id for inter-element referencing
                                  Control0..1
                                  Typestring
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  174. Task.reasonCode.extension
                                  Definition

                                  May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                  ShortAdditional content defined by implementations
                                  Comments

                                  There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                  Control0..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Alternate Namesextensions, user content
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  SlicingThis element introduces a set of slices on Task.reasonCode.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                  • value @ url
                                  • 176. Task.reasonCode.coding
                                    Definition

                                    A reference to a code defined by a terminology system.

                                    ShortCode defined by a terminology system
                                    Comments

                                    Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

                                    Control0..*
                                    TypeCoding
                                    Is Modifierfalse
                                    Summarytrue
                                    Requirements

                                    Allows for alternative encodings within a code system, and translations to other code systems.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    178. Task.reasonCode.text
                                    Definition

                                    A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

                                    ShortPlain text representation of the concept
                                    Comments

                                    Very often the text is the same as a displayName of one of the codings.

                                    Control1..1
                                    Typestring
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Must Supporttrue
                                    Summarytrue
                                    Requirements

                                    The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    180. Task.reasonReference
                                    Definition

                                    A resource reference indicating why this task needs to be performed.

                                    ShortWhy task is needed
                                    Comments

                                    Example targets would be HRex Coverage, PCDE Claim (for prior authorization) or a bare Claim resource for referencing an actual Claim.

                                    Control0..1
                                    TypeReference(Claim, Coverage, US Core Coverage Profile, US Core Coverage Profile)
                                    Is Modifierfalse
                                    Must Supporttrue
                                    Must Support TypesNo must-support rules about the choice of types/profiles
                                    Summaryfalse
                                    Requirements

                                    Indicates why the information request is occurring

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    182. Task.reasonReference.id
                                    Definition

                                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                    ShortUnique id for inter-element referencing
                                    Control0..1
                                    Typestring
                                    Is Modifierfalse
                                    XML FormatIn the XML format, this property is represented as an attribute.
                                    Summaryfalse
                                    184. Task.reasonReference.extension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                    ShortAdditional content defined by implementations
                                    Comments

                                    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                    Control0..*
                                    TypeExtension
                                    Is Modifierfalse
                                    Summaryfalse
                                    Alternate Namesextensions, user content
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    SlicingThis element introduces a set of slices on Task.reasonReference.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                    • value @ url
                                    • 186. Task.reasonReference.reference
                                      Definition

                                      A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                      ShortLiteral reference, Relative, internal or absolute URL
                                      Comments

                                      Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                      Control0..1
                                      This element is affected by the following invariants: ref-1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      188. Task.reasonReference.type
                                      Definition

                                      The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                      The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                      ShortType the reference refers to (e.g. "Patient")
                                      Comments

                                      This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified.

                                      Control0..1
                                      BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                      (extensible to http://hl7.org/fhir/ValueSet/resource-types)

                                      Aa resource (or, for logical models, the URI of the logical model).

                                      Typeuri
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      190. Task.reasonReference.identifier
                                      Definition

                                      business identifier representing the coverage, claim, or prior-authorization ID

                                      ShortCoverage or Claim ID
                                      Comments

                                      Most payer systems will not expose their claim and prior authorization records as a FHIR resource. They will provide a unique business identifier for the claim or prior authorization using Task.reasonReference.identifier. This could be a payer-assigned or provider-assigned identifier which SHOULD be communicated in Task.reasonReference.identifier.type using the "FILL" for the payer and "PLAC" for the provider.

                                      NoteThis is a business identifier, not a resource identifier (see discussion)
                                      Control0..1
                                      TypeIdentifier
                                      Is Modifierfalse
                                      Must Supporttrue
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      192. Task.reasonReference.display
                                      Definition

                                      Plain text narrative that identifies the resource in addition to the resource reference.

                                      ShortText alternative for the resource
                                      Comments

                                      This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      194. Task.insurance
                                      Definition

                                      Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be relevant to the Task.

                                      ShortAssociated insurance coverage
                                      Control0..*
                                      TypeReference(Coverage, ClaimResponse)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      196. Task.note
                                      Definition

                                      Free-text information captured about the task as it progresses.

                                      ShortComments made about the task
                                      Control0..*
                                      TypeAnnotation
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      198. Task.relevantHistory
                                      Definition

                                      Links to Provenance records for past versions of this Task that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the task.

                                      ShortKey events in history of the Task
                                      Comments

                                      This element does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The Provenance for the current version can be retrieved with a _revinclude.

                                      Control0..*
                                      TypeReference(Provenance)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate NamesStatus History
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      200. Task.restriction
                                      Definition

                                      If the Task.focus is a request resource and the task is seeking fulfillment (i.e. is asking for the request to be actioned), this element identifies any limitations on what parts of the referenced request should be actioned.

                                      ShortConstraints on fulfillment tasks
                                      Control0..1
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      Sometimes when fulfillment is sought, you don't want full fulfillment.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      202. Task.restriction.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      204. Task.restriction.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                      ShortAdditional content defined by implementations
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      206. Task.restriction.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      Comments

                                      There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      Requirements

                                      Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                      Alternate Namesextensions, user content, modifiers
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      208. Task.restriction.repetitions
                                      Definition

                                      Indicates the number of times the requested action should occur.

                                      ShortHow many times to repeat
                                      Control0..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summaryfalse
                                      Requirements

                                      E.g. order that requests monthly lab tests, fulfillment is sought for 1.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      210. Task.restriction.period
                                      Definition

                                      Over what time-period is fulfillment sought.

                                      ShortWhen fulfillment sought
                                      Comments

                                      Note that period.high is the due date representing the time by which the task should be completed.

                                      Control0..1
                                      TypePeriod
                                      Is Modifierfalse
                                      Summaryfalse
                                      Requirements

                                      E.g. order that authorizes 1 year's services. Fulfillment is sought for next 3 months.

                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      212. Task.restriction.recipient
                                      Definition

                                      For requests that are targeted to more than on potential recipient/target, for whom is fulfillment sought?

                                      ShortFor whom is fulfillment sought?
                                      Control0..*
                                      TypeReference(Patient, Practitioner, PractitionerRole, RelatedPerson, Group, Organization)
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      214. Task.input
                                      Definition

                                      Additional information that may be needed in the execution of the task.

                                      ShortInformation used to perform task
                                      Control1..*
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Must Supporttrue
                                      Summaryfalse
                                      Requirements

                                      Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                                      Alternate NamesSupporting Information
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      SlicingThis element introduces a set of slices on Task.input. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                      • value @ type
                                      • 216. Task.input.id
                                        Definition

                                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                        ShortUnique id for inter-element referencing
                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        XML FormatIn the XML format, this property is represented as an attribute.
                                        Summaryfalse
                                        218. Task.input.extension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                        ShortAdditional content defined by implementations
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifierfalse
                                        Summaryfalse
                                        Alternate Namesextensions, user content
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        220. Task.input.modifierExtension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                        ShortExtensions that cannot be ignored even if unrecognized
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                        Summarytrue
                                        Requirements

                                        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                        Alternate Namesextensions, user content, modifiers
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        222. Task.input.type
                                        Definition

                                        A code or description indicating how the input is intended to be used as part of the task execution.

                                        ShortLabel for the input
                                        Comments

                                        If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                                        Control1..1
                                        Binding

                                        Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                                        TypeCodeableConcept
                                        Is Modifierfalse
                                        Summaryfalse
                                        Requirements

                                        Inputs are named to enable task automation to bind data and pass it from one task to the next.

                                        Alternate NamesName
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        224. Task.input.value[x]
                                        Definition

                                        The value of the input parameter as a basic type.

                                        ShortContent to use in performing the task
                                        Control1..1
                                        TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        226. Task.input:query
                                        Slice Namequery
                                        Definition

                                        Indicates the specific FHIR RESTful query to be executed

                                        ShortRequested query
                                        Comments

                                        This will contain the text that should go after the '?' when executing the query.

                                        Control0..1
                                        This element is affected by the following invariants: cdex-9, cdex-12
                                        TypeBackboneElement
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Summaryfalse
                                        Requirements

                                        Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                                        Alternate NamesSupporting Information
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        228. Task.input:query.id
                                        Definition

                                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                        ShortUnique id for inter-element referencing
                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        XML FormatIn the XML format, this property is represented as an attribute.
                                        Summaryfalse
                                        230. Task.input:query.extension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                        ShortAdditional content defined by implementations
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifierfalse
                                        Summaryfalse
                                        Alternate Namesextensions, user content
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        232. Task.input:query.modifierExtension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                        ShortExtensions that cannot be ignored even if unrecognized
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                        Summarytrue
                                        Requirements

                                        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                        Alternate Namesextensions, user content, modifiers
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        234. Task.input:query.type
                                        Definition

                                        A code or description indicating how the input is intended to be used as part of the task execution.

                                        ShortLabel for the input
                                        Comments

                                        If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                                        Control1..1
                                        Binding

                                        Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                                        TypeCodeableConcept
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Summaryfalse
                                        Requirements

                                        Inputs are named to enable task automation to bind data and pass it from one task to the next.

                                        Alternate NamesName
                                        Pattern Value{
                                          "coding" : [{
                                            "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
                                            "code" : "data-query"
                                          }]
                                        }
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        236. Task.input:query.value[x]
                                        Definition

                                        The value of the input parameter as a basic type.

                                        Shortquery value
                                        Control1..1
                                        Typestring
                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Must Supporttrue
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        238. Task.input:code
                                        Slice Namecode
                                        Definition

                                        A code indicating the type of data/document to be returned

                                        ShortRequested data code
                                        Comments

                                        This might be a document code or other code describing the requested information. If no appropriate standard code exists, local codes may be used between partners, or a human-readable textual description of the desired data can be provided. Downstream profiles may tighten expectations for this element.

                                        Control0..1
                                        This element is affected by the following invariants: cdex-7, cdex-9
                                        TypeBackboneElement
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Summaryfalse
                                        Requirements

                                        Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                                        Alternate NamesSupporting Information
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        240. Task.input:code.id
                                        Definition

                                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                        ShortUnique id for inter-element referencing
                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        XML FormatIn the XML format, this property is represented as an attribute.
                                        Summaryfalse
                                        242. Task.input:code.extension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                        ShortAdditional content defined by implementations
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifierfalse
                                        Summaryfalse
                                        Alternate Namesextensions, user content
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        244. Task.input:code.modifierExtension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                        ShortExtensions that cannot be ignored even if unrecognized
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                        Summarytrue
                                        Requirements

                                        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                        Alternate Namesextensions, user content, modifiers
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        246. Task.input:code.type
                                        Definition

                                        A code or description indicating how the input is intended to be used as part of the task execution.

                                        ShortLabel for the input
                                        Comments

                                        If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                                        Control1..1
                                        Binding

                                        Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                                        TypeCodeableConcept
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Summaryfalse
                                        Requirements

                                        Inputs are named to enable task automation to bind data and pass it from one task to the next.

                                        Alternate NamesName
                                        Pattern Value{
                                          "coding" : [{
                                            "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
                                            "code" : "data-code"
                                          }]
                                        }
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        248. Task.input:code.value[x]
                                        Definition

                                        The value of the input parameter as a basic type.

                                        Shortquery value
                                        Control1..1
                                        BindingUnless not suitable, these codes SHALL be taken from US Core DocumentReference Type
                                        (extensible to http://hl7.org/fhir/us/core/ValueSet/us-core-documentreference-type)
                                        TypeCodeableConcept
                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        250. Task.input:questionnaire
                                        Slice Namequestionnaire
                                        Definition

                                        Indicates the questionnaire to be completed.

                                        ShortData Request questionnaire
                                        Control0..1
                                        This element is affected by the following invariants: cdex-8, cdex-9
                                        TypeBackboneElement
                                        Is Modifierfalse
                                        Summaryfalse
                                        Requirements

                                        Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                                        Alternate NamesSupporting Information
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        252. Task.input:questionnaire.id
                                        Definition

                                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                        ShortUnique id for inter-element referencing
                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        XML FormatIn the XML format, this property is represented as an attribute.
                                        Summaryfalse
                                        254. Task.input:questionnaire.extension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                        ShortAdditional content defined by implementations
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifierfalse
                                        Summaryfalse
                                        Alternate Namesextensions, user content
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        256. Task.input:questionnaire.modifierExtension
                                        Definition

                                        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                        Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                        ShortExtensions that cannot be ignored even if unrecognized
                                        Comments

                                        There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                        Control0..*
                                        TypeExtension
                                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                        Summarytrue
                                        Requirements

                                        Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                        Alternate Namesextensions, user content, modifiers
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        258. Task.input:questionnaire.type
                                        Definition

                                        A code or description indicating how the input is intended to be used as part of the task execution.

                                        ShortLabel for the input
                                        Comments

                                        If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                                        Control1..1
                                        Binding

                                        Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                                        TypeCodeableConcept
                                        Is Modifierfalse
                                        Summaryfalse
                                        Requirements

                                        Inputs are named to enable task automation to bind data and pass it from one task to the next.

                                        Alternate NamesName
                                        Pattern Value{
                                          "coding" : [{
                                            "system" : "http://hl7.org/fhir/uv/sdc/CodeSystem/temp",
                                            "code" : "questionnaire"
                                          }]
                                        }
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        260. Task.input:questionnaire.value[x]
                                        Definition

                                        The value of the input parameter as a basic type.

                                        ShortURL
                                        Control1..1
                                        Typecanonical(DTR Standard Questionnaire, DTR Questionnaire for adaptive form)
                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        262. Task.input:questionnaire.value[x].id
                                        Definition

                                        unique id for the element within a resource (for internal references)

                                        Shortxml:id (or equivalent in JSON)
                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        XML FormatIn the XML format, this property is represented as an attribute.
                                        Summaryfalse
                                        264. Task.input:questionnaire.value[x].extension
                                        Definition

                                        An Extension

                                        ShortExtension
                                        Control0..*
                                        TypeExtension
                                        Is Modifierfalse
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        SlicingThis element introduces a set of slices on Task.input.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                        • value @ url
                                        • 266. Task.input:questionnaire.value[x].extension:questionnaireDisplay
                                          Slice NamequestionnaireDisplay
                                          Definition

                                          The title or other name to display when referencing a resource by canonical URL.

                                          ShortDisplay name for canonical reference
                                          Comments

                                          This can be handy for commonly used questionnaires with a recognizable name.

                                          Control0..1
                                          TypeExtension(Display Name) (Extension Type: string)
                                          Is Modifierfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          268. Task.input:questionnaire.value[x].value
                                          Definition

                                          Primitive value for canonical

                                          ShortPrimitive value for canonical
                                          Control0..1
                                          Typestring
                                          Is Modifierfalse
                                          XML FormatIn the XML format, this property is represented as an attribute.
                                          Summaryfalse
                                          270. Task.input:signature
                                          Slice Namesignature
                                          Definition

                                          Flag to indicate whether the requested data requires a signature.

                                          ShortSignature flag
                                          Control0..1
                                          TypeBackboneElement
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Summaryfalse
                                          Requirements

                                          Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                                          Alternate NamesSupporting Information
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          272. Task.input:signature.id
                                          Definition

                                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                          ShortUnique id for inter-element referencing
                                          Control0..1
                                          Typestring
                                          Is Modifierfalse
                                          XML FormatIn the XML format, this property is represented as an attribute.
                                          Summaryfalse
                                          274. Task.input:signature.extension
                                          Definition

                                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                          ShortAdditional content defined by implementations
                                          Comments

                                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                          Control0..*
                                          TypeExtension
                                          Is Modifierfalse
                                          Summaryfalse
                                          Alternate Namesextensions, user content
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          276. Task.input:signature.modifierExtension
                                          Definition

                                          May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                          ShortExtensions that cannot be ignored even if unrecognized
                                          Comments

                                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                          Control0..*
                                          TypeExtension
                                          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                          Summarytrue
                                          Requirements

                                          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                          Alternate Namesextensions, user content, modifiers
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          278. Task.input:signature.type
                                          Definition

                                          A code or description indicating how the input is intended to be used as part of the task execution.

                                          ShortLabel for the input
                                          Comments

                                          If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                                          Control1..1
                                          Binding

                                          Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Summaryfalse
                                          Requirements

                                          Inputs are named to enable task automation to bind data and pass it from one task to the next.

                                          Alternate NamesName
                                          Pattern Value{
                                            "coding" : [{
                                              "system" : "http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp",
                                              "code" : "signature-flag"
                                            }]
                                          }
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          280. Task.input:signature.value[x]
                                          Definition

                                          The value of the input parameter as a basic type.

                                          ShortSignature flag value
                                          Control1..1
                                          Typeboolean
                                          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                          Is Modifierfalse
                                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                          Must Supporttrue
                                          Summaryfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          282. Task.input:POU
                                          Slice NamePOU
                                          Definition

                                          Represent the purpose of use for the requested data.

                                          ShortPurpose of use code
                                          Control0..1
                                          TypeBackboneElement
                                          Is Modifierfalse
                                          Summaryfalse
                                          Requirements

                                          Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows.

                                          Alternate NamesSupporting Information
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          284. Task.input:POU.id
                                          Definition

                                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                          ShortUnique id for inter-element referencing
                                          Control0..1
                                          Typestring
                                          Is Modifierfalse
                                          XML FormatIn the XML format, this property is represented as an attribute.
                                          Summaryfalse
                                          286. Task.input:POU.extension
                                          Definition

                                          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                          ShortAdditional content defined by implementations
                                          Comments

                                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                          Control0..*
                                          TypeExtension
                                          Is Modifierfalse
                                          Summaryfalse
                                          Alternate Namesextensions, user content
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          288. Task.input:POU.modifierExtension
                                          Definition

                                          May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                          Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                          ShortExtensions that cannot be ignored even if unrecognized
                                          Comments

                                          There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                          Control0..*
                                          TypeExtension
                                          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                          Summarytrue
                                          Requirements

                                          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                          Alternate Namesextensions, user content, modifiers
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          290. Task.input:POU.type
                                          Definition

                                          A code or description indicating how the input is intended to be used as part of the task execution.

                                          ShortLabel for the input
                                          Comments

                                          If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input.

                                          Control1..1
                                          Binding

                                          Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Summaryfalse
                                          Requirements

                                          Inputs are named to enable task automation to bind data and pass it from one task to the next.

                                          Alternate NamesName
                                          Pattern Value{
                                            "coding" : [{
                                              "system" : "http://hl7.org/fhir/us/davinci-cdex/CodeSystem/cdex-temp",
                                              "code" : "purpose-of-use"
                                            }]
                                          }
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          292. Task.input:POU.value[x]
                                          Definition

                                          The value of the input parameter as a basic type.

                                          ShortPurpose of use value
                                          Control1..1
                                          BindingUnless not suitable, these codes SHALL be taken from CDex Purpose of Use Value Set
                                          (extensible to http://hl7.org/fhir/us/davinci-cdex/ValueSet/cdex-POU)
                                          TypeCodeableConcept
                                          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                          Is Modifierfalse
                                          Summaryfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          294. Task.output
                                          Definition

                                          Outputs produced by the Task.

                                          ShortInformation produced as part of task
                                          Control0..*
                                          This element is affected by the following invariants: tdr-3
                                          TypeBackboneElement
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Summaryfalse
                                          Requirements

                                          Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          SlicingThis element introduces a set of slices on Task.output. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                          • value @ type
                                          • 296. Task.output.id
                                            Definition

                                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                            ShortUnique id for inter-element referencing
                                            Control0..1
                                            Typestring
                                            Is Modifierfalse
                                            XML FormatIn the XML format, this property is represented as an attribute.
                                            Summaryfalse
                                            298. Task.output.extension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                            ShortAdditional content defined by implementations
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifierfalse
                                            Summaryfalse
                                            Alternate Namesextensions, user content
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            300. Task.output.modifierExtension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                            ShortExtensions that cannot be ignored even if unrecognized
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                            Summarytrue
                                            Requirements

                                            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                            Alternate Namesextensions, user content, modifiers
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            302. Task.output.type
                                            Definition

                                            The name of the Output parameter.

                                            ShortLabel for output
                                            Control1..1
                                            Binding

                                            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Outputs are named to enable task automation to bind data and pass it from one task to the next.

                                            Alternate NamesName
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            304. Task.output.value[x]
                                            Definition

                                            The value of the Output parameter as a basic type.

                                            ShortResult of output
                                            Control1..1
                                            TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta
                                            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                            Is Modifierfalse
                                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                            Summaryfalse
                                            Requirements

                                            Task outputs can take any form.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            306. Task.output:data
                                            Slice Namedata
                                            Definition

                                            The data content requested. Multiple repetitions are permitted in the event that a single request returns multiple instances and packaging in a Bundle is not necessary/appropriate. Also, in most cases Provenance instances should accompany returned data so that the requester can best integrate and allocate trust/confidence to the provided data.

                                            ShortRequested data
                                            Control0..*
                                            TypeBackboneElement
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Summaryfalse
                                            Requirements

                                            Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            308. Task.output:data.id
                                            Definition

                                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                            ShortUnique id for inter-element referencing
                                            Control0..1
                                            Typestring
                                            Is Modifierfalse
                                            XML FormatIn the XML format, this property is represented as an attribute.
                                            Summaryfalse
                                            310. Task.output:data.extension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                            ShortAdditional content defined by implementations
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifierfalse
                                            Summaryfalse
                                            Alternate Namesextensions, user content
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            312. Task.output:data.modifierExtension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                            ShortExtensions that cannot be ignored even if unrecognized
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                            Summarytrue
                                            Requirements

                                            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                            Alternate Namesextensions, user content, modifiers
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            314. Task.output:data.type
                                            Definition

                                            The name of the Output parameter.

                                            ShortLabel for output
                                            Control1..1
                                            Binding

                                            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Summaryfalse
                                            Requirements

                                            Outputs are named to enable task automation to bind data and pass it from one task to the next.

                                            Alternate NamesName
                                            Pattern Value{
                                              "coding" : [{
                                                "system" : "http://hl7.org/fhir/us/davinci-hrex/CodeSystem/hrex-temp",
                                                "code" : "data-value"
                                              }]
                                            }
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            316. Task.output:data.value[x]
                                            Definition

                                            The value of the Output parameter as a basic type.

                                            Shortdata reference
                                            Comments

                                            The referenced data might be contained within the Task (if it doesn't have/shouldn't have independent persistence), but can also refer to data stored elsewhere - either on the owner's system or some other system. Note that all returned data SHOULD comply with appropriate US-Core and/or Da Vinci profiles. The "questionnaire-response" output type is for a QuestionnaireResponse resulting from the request.

                                            Control1..1
                                            TypeReference
                                            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Summaryfalse
                                            Requirements

                                            Task outputs can take any form.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            318. Task.output:response
                                            Slice Nameresponse
                                            Definition

                                            Indicates the questionnaire response resulting from the request.

                                            ShortInformation produced as part of task
                                            Control0..1
                                            This element is affected by the following invariants: cdex-11
                                            TypeBackboneElement
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            320. Task.output:response.id
                                            Definition

                                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                            ShortUnique id for inter-element referencing
                                            Control0..1
                                            Typestring
                                            Is Modifierfalse
                                            XML FormatIn the XML format, this property is represented as an attribute.
                                            Summaryfalse
                                            322. Task.output:response.extension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                                            ShortAdditional content defined by implementations
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifierfalse
                                            Summaryfalse
                                            Alternate Namesextensions, user content
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            324. Task.output:response.modifierExtension
                                            Definition

                                            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

                                            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                                            ShortExtensions that cannot be ignored even if unrecognized
                                            Comments

                                            There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

                                            Control0..*
                                            TypeExtension
                                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                            Summarytrue
                                            Requirements

                                            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                            Alternate Namesextensions, user content, modifiers
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            326. Task.output:response.type
                                            Definition

                                            The name of the Output parameter.

                                            ShortLabel for output
                                            Control1..1
                                            Binding

                                            Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Outputs are named to enable task automation to bind data and pass it from one task to the next.

                                            Alternate NamesName
                                            Pattern Value{
                                              "coding" : [{
                                                "system" : "http://hl7.org/fhir/uv/sdc/CodeSystem/temp",
                                                "code" : "questionnaire-response"
                                              }]
                                            }
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            328. Task.output:response.value[x]
                                            Definition

                                            The value of the Output parameter as a basic type.

                                            ShortReference to the QuestionnaireResponse
                                            Control1..1
                                            TypeReference(CDex SDC QuestionnaireResponse Profile, Adaptive Questionnaire Response)
                                            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Task outputs can take any form.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))