AU eRequesting Implementation Guide
1.0.0-ci-build - CI Build

AU eRequesting Implementation Guide, published by HL7 Australia. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7au/au-fhir-erequesting/ and changes regularly. See the Directory of published versions

## Resource Profile: AUeRequestingTaskCommunicationRequest - Detailed Descriptions

Page standards status: Draft | Maturity Level: 1

Definitions for the au-erequesting-task-communicationrequest resource profile.

- Differential Elements Table
- Key Elements Table
- Snapshot Elements Table

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

0. Task
Invariants | au-ereq-taskcr-01: Changed:Tag 'fulfilment-task-group' from 'http://terminology.hl7.org.au/CodeSystem/resource-tag' shall not be present. (`meta.tag.where(system = 'http://terminology.hl7.org.au/CodeSystem/resource-tag' and code = 'fulfilment-task-group').empty()`)
2. Task.meta
4. Task.meta.tag:eRequestingFulfilmentTask
Slice Name | eRequestingFulfilmentTask
Pattern Value | `{ "system" : "http://terminology.hl7.org.au/CodeSystem/resource-tag", "code" : "fulfilment-task" }`
6. Task.partOf
Short | Task group of which this task is a part
Control | 1..1
Type | Reference(AU eRequesting Task Group)
Must Support | true
Obligations |
Obligations | Actor
SHALL:populate | AU eRequesting Placer
SHALL:handle | AU eRequesting Filler
SHALL:handle | AU eRequesting Server
SHALL:able-to-populate | AU eRequesting Server
SHALL:no-error | AU eRequesting Patient
8. Task.focus
Control | 1..?
Type | Reference(AU eRequesting CommunicationRequest CopyTo, AU eRequesting CommunicationRequest Patient, AU eRequesting CommunicationRequest Urgent Provider)
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Obligations |
Obligations | Actor
SHALL:populate | AU eRequesting Placer
SHALL:handle | AU eRequesting Filler
SHALL:handle | AU eRequesting Server
SHALL:able-to-populate | AU eRequesting Server
SHALL:no-error | AU eRequesting Patient

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

0. Task
Definition | A task to be performed.
Short | A task to be performed
Control | 0..*
Is Modifier | false
Summary | false
Invariants | dom-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`) au-ereq-taskcr-01: Tag 'fulfilment-task-group' from 'http://terminology.hl7.org.au/CodeSystem/resource-tag' shall not be present. (`meta.tag.where(system = 'http://terminology.hl7.org.au/CodeSystem/resource-tag' and code = 'fulfilment-task-group').empty()`) 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.
Short | Metadata about the resource
Control | 10..1
Type | Meta
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Invariants | ele-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.
Short | Tags 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.
Control | 10..*
Binding | For example codes, see CommonTags http://hl7.org/fhir/ValueSet/common-tags|4.0.1 (example to `http://hl7.org/fhir/ValueSet/common-tags|4.0.1` ) Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".
Type | Coding
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This 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:eRequestingFulfilmentTask
Slice Name | eRequestingFulfilmentTask
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.
Short | Tags 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.
Control | 10..1*
Binding | The codes SHALL be taken from For example codes, see AU eRequesting Fulfilment Task Tags http://hl7.org/fhir/ValueSet/common-tags|4.0.1 (required to `http://terminology.hl7.org.au/ValueSet/au-erequesting-fulfilment-task-tags` )
Type | Coding
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Pattern Value | `{ "system" : "http://terminology.hl7.org.au/CodeSystem/resource-tag", "code" : "fulfilment-task" }`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. 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.
Short | A 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.
Control | 0..1
Type | uri
Is Modifier | true 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 Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
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 Names | extensions, user content
Invariants | 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())
12. Task.identifier
Definition | The business identifier for this task.
Short | Task Instance Identifier
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..*
Type | Identifier(Identifier, AU Local Order Identifier)
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Obligations |
Obligations | Actor | Source
SHALL:no-error | AU eRequesting Placer | from AU eRequesting Task
SHALL:no-error | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
14. Task.groupIdentifier
Definition | An identifier that links together multiple tasks and other requests that were created in the same context.
Short | Requisition or grouper id
Control | 10..1
Type | Identifier(AU Local Order Identifier)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | Billing and/or reporting can be linked to whether multiple requests were created as a single unit.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. Task.groupIdentifier.use
Definition | The purpose of this identifier.
Short | usual | official | temp | secondary | old (If known)
Comments | Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Control | 0..1
Binding | The codes SHALL be taken from IdentifierUse http://hl7.org/fhir/ValueSet/identifier-use|4.0.1 (required to `http://hl7.org/fhir/ValueSet/identifier-use|4.0.1` ) Identifies the purpose for this identifier, if known .
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
18. Task.groupIdentifier.type
Definition | A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Short | Coded identifier type for local order identifierDescription of identifier
Comments | This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Control | 10..1
Binding | The codes SHALL be taken from Unless not suitable, these codes SHALL be taken from Order Identifier Type http://hl7.org/fhir/ValueSet/identifier-type|4.0.1 (required to `http://terminology.hl7.org.au/ValueSet/order-identifier-type` )
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Allows users to make use of identifiers when the identifier system is not known.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. Task.groupIdentifier.type.coding
Definition | A reference to a code defined by a terminology system.
Short | Code 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.
Control | 10..1*
Type | Coding
Is Modifier | false
Summary | true
Requirements | Allows for alternative encodings within a code system, and translations to other code systems.
Pattern Value | `{ "system" : "http://terminology.hl7.org/CodeSystem/v2-0203", "code" : "PGN" }`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. Task.groupIdentifier.system
Definition | Establishes the namespace for the value - that is, a URL that describes a set values that are unique.
Short | System identifier namespace for the organisation that assigned the order identifierThe namespace for the identifier value
Comments | Identifier.system is always case sensitive.
Control | 10..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Example | General: http://www.acme.com/identifiers/patient
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. Task.groupIdentifier.value
Definition | The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Short | Order identifierThe value that is unique
Comments | If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Control | 10..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Example | General: 123456
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. Task.partOf
Definition | Task that this particular task is part of.
Short | Task group of which this task is a partComposite task
Comments | This should usually be 0..1.
Control | 10..1*
Type | Reference(AU eRequesting Task Group, Task)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor
SHALL:populate | AU eRequesting Placer
SHALL:handle | AU eRequesting Filler
SHALL:handle | AU eRequesting Server
SHALL:able-to-populate | AU eRequesting Server
SHALL:no-error | AU eRequesting Patient
Summary | true
Requirements | Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task).
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. Task.status
Definition | The current status of the task.
Short | draft | requested | received | accepted | +
Control | 1..1
Binding | The codes SHALL be taken from AU eRequesting Task Status http://hl7.org/fhir/ValueSet/task-status|4.0.1 (required to `http://terminology.hl7.org.au/ValueSet/au-erequesting-task-status` )
Type | code
Is Modifier | true 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 Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. Task.statusReason
Definition | An explanation as to why this task is held, failed, was refused, etc.
Short | Reason for current status
Comments | This applies to the current status. Look at the history of the task to see reasons for past statuses.
Control | 0..1
Binding | Codes to identify the reason for current status. These will typically be specific to a particular workflow.
Type | CodeableConcept
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
32. Task.businessStatus
Definition | Contains business-specific nuances of the business state.
Short | Business status of the Task e.g. BookedE.g. "Specimen collected", "IV prepped"
Control | 0..1
Binding | Unless not suitable, these codes SHALL be taken from For example codes, see AU eRequesting Task Business Status (extensible to `http://terminology.hl7.org.au/ValueSet/au-erequesting-task-businessstatus` )
Type | CodeableConcept
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:handle | AU eRequesting Placer | from AU eRequesting Task
SHALL:populate-if-known | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | There's often a need to track substates of a task - this is often variable by specific workflow implementation.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. 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.
Short | unknown | 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".
Control | 1..1
Binding | The codes SHALL be taken from TaskIntent http://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.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Fixed Value | `order`
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. Task.priority
Definition | Indicates how quickly the Task should be addressed with respect to other requests.
Short | routine | urgent | asap | stat
Control | 0..1
Binding | The codes SHALL be taken from RequestPriority http://hl7.org/fhir/ValueSet/request-priority|4.0.1 (required to `http://hl7.org/fhir/ValueSet/request-priority|4.0.1` ) The task's priority.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | false
Requirements | Used to identify the service level expected while performing a task.
Meaning if Missing | If missing, this task should be performed with normal priority
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. Task.focus
Definition | The request being actioned or the resource being manipulated by this task.
Short | What 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.).
Control | 10..1
Type | Reference(AU eRequesting CommunicationRequest CopyTo, AU eRequesting CommunicationRequest Patient, AU eRequesting CommunicationRequest Urgent Provider, Resource)
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Obligations |
Obligations | Actor
SHALL:populate | AU eRequesting Placer
SHALL:handle | AU eRequesting Filler
SHALL:handle | AU eRequesting Server
SHALL:able-to-populate | AU eRequesting Server
SHALL:no-error | AU eRequesting Patient
Summary | true
Requirements | Used to identify the thing to be done.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. Task.for
Definition | The entity who benefits from the performance of the service specified in the task (e.g., the patient).
Short | Beneficiary of the Task
Control | 10..1
Type | Reference(AU Core Patient, Resource)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
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 Names | Patient
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
42. Task.authoredOn
Definition | The date and time this task was created.
Short | Task Creation Date
Control | 10..1 This element is affected by the following invariants: inv-1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | false
Requirements | Most often used along with lastUpdated to track duration of task to supporting monitoring and management.
Alternate Names | Created Date
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. Task.lastModified
Definition | The date and time of last modification to this task.
Short | Task Last Modified Date
Control | 0..1 This element is affected by the following invariants: inv-1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | Used along with history to track task activity and time in a particular task state. This enables monitoring and management.
Alternate Names | Update Date
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
46. Task.requester
Definition | The creator of the task.
Short | Who is asking for task to be done
Control | 10..1
Type | Reference(AU Core PractitionerRole, Device, Organization, Patient, Practitioner, PractitionerRole, RelatedPerson)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
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).
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
48. Task.owner
Definition | Individual organization or Device currently responsible for task execution.
Short | Responsible individual
Comments | Tasks may be created with an owner not yet identified.
Control | 0..1
Type | Reference(AU Core Organization, Practitioner, PractitionerRole, Organization, CareTeam, HealthcareService, Patient, Device, RelatedPerson)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | Identifies who is expected to perform this task.
Alternate Names | Performer, Executer
Invariants | ele-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 foundhere

0. Task
Definition | A task to be performed.
Short | A task to be performed
Control | 0..*
Is Modifier | false
Summary | false
Invariants | dom-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`) au-ereq-taskcr-01: Tag 'fulfilment-task-group' from 'http://terminology.hl7.org.au/CodeSystem/resource-tag' shall not be present. (`meta.tag.where(system = 'http://terminology.hl7.org.au/CodeSystem/resource-tag' and code = 'fulfilment-task-group').empty()`)
2. Task.id
Definition | The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Short | Logical 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.
Control | 0..1
Type | id
Is Modifier | false
Summary | true
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.
Short | Metadata about the resource
Control | 1..1
Type | Meta
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Invariants | ele-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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
Slicing | This 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.
Short | Version 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.
Control | 0..1
Type | id
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-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.
Short | When 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.
Control | 0..1
Type | instant
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-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.
Short | Identifies 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.
Control | 0..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-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.
Short | Profiles 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.
Control | 0..*
Type | canonical(StructureDefinition)
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-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.
Short | Security 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.
Control | 0..*
Binding | Unless not suitable, these codes SHALL be taken from All Security Labels (extensible to `http://hl7.org/fhir/ValueSet/security-labels|4.0.1` ) Security Labels from the Healthcare Privacy and Security Classification System.
Type | Coding
Is Modifier | false
Summary | true
Invariants | ele-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.
Short | Tags 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.
Control | 1..*
Binding | For example codes, see CommonTags (example to `http://hl7.org/fhir/ValueSet/common-tags|4.0.1` ) Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".
Type | Coding
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This 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:eRequestingFulfilmentTask
Slice Name | eRequestingFulfilmentTask
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.
Short | Tags 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.
Control | 1..1
Binding | The codes SHALL be taken from AU eRequesting Fulfilment Task Tags (required to `http://terminology.hl7.org.au/ValueSet/au-erequesting-fulfilment-task-tags` )
Type | Coding
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Pattern Value | `{ "system" : "http://terminology.hl7.org.au/CodeSystem/resource-tag", "code" : "fulfilment-task" }`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
24. 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.
Short | A 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.
Control | 0..1
Type | uri
Is Modifier | true 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 Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
26. Task.language
Definition | The base language in which the resource is written.
Short | Language 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).
Control | 0..1
Binding | The codes SHOULD be taken from CommonLanguages (preferred to `http://hl7.org/fhir/ValueSet/languages|4.0.1` ) A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
28. 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.
Short | Text 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.
Control | 0..1
Type | Narrative
Is Modifier | false
Summary | false
Alternate Names | narrative, html, xhtml, display
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
30. 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.
Short | Contained, 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.
Control | 0..*
Type | Resource
Is Modifier | false
Summary | false
Alternate Names | inline resources, anonymous resources, contained resources
32. 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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
34. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
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 Names | extensions, user content
Invariants | 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()`)
36. Task.identifier
Definition | The business identifier for this task.
Short | Task Instance Identifier
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..*
Type | Identifier(Identifier, AU Local Order Identifier)
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Obligations |
Obligations | Actor | Source
SHALL:no-error | AU eRequesting Placer | from AU eRequesting Task
SHALL:no-error | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
38. 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.
Short | Formal definition of task
Control | 0..1
Type | canonical(ActivityDefinition)
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Enables a formal definition of how he task is to be performed, enabling automation.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
40. 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.
Short | Formal definition of task
Control | 0..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
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.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
42. 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.
Short | Request fulfilled by this task
Control | 0..*
Type | Reference(Resource)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
44. Task.groupIdentifier
Definition | An identifier that links together multiple tasks and other requests that were created in the same context.
Short | Requisition or grouper id
Control | 1..1
Type | Identifier(AU Local Order Identifier)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | Billing and/or reporting can be linked to whether multiple requests were created as a single unit.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
46. Task.groupIdentifier.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
48. Task.groupIdentifier.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
Slicing | This element introduces a set of slices on `Task.groupIdentifier.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
50. Task.groupIdentifier.use
Definition | The purpose of this identifier.
Short | usual | official | temp | secondary | old (If known)
Comments | Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Control | 0..1
Binding | The codes SHALL be taken from IdentifierUse (required to `http://hl7.org/fhir/ValueSet/identifier-use|4.0.1` ) Identifies the purpose for this identifier, if known .
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
52. Task.groupIdentifier.type
Definition | A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Short | Coded identifier type for local order identifier
Comments | This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Control | 1..1
Binding | The codes SHALL be taken from Order Identifier Type (required to `http://terminology.hl7.org.au/ValueSet/order-identifier-type` )
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Allows users to make use of identifiers when the identifier system is not known.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
54. Task.groupIdentifier.type.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
56. Task.groupIdentifier.type.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
Slicing | This element introduces a set of slices on `Task.groupIdentifier.type.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
58. Task.groupIdentifier.type.coding
Definition | A reference to a code defined by a terminology system.
Short | Code 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.
Control | 1..1
Type | Coding
Is Modifier | false
Summary | true
Requirements | Allows for alternative encodings within a code system, and translations to other code systems.
Pattern Value | `{ "system" : "http://terminology.hl7.org/CodeSystem/v2-0203", "code" : "PGN" }`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
60. Task.groupIdentifier.type.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.
Short | Plain text representation of the concept
Comments | Very often the text is the same as a displayName of one of the codings.
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
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.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
62. Task.groupIdentifier.system
Definition | Establishes the namespace for the value - that is, a URL that describes a set values that are unique.
Short | System identifier namespace for the organisation that assigned the order identifier
Comments | Identifier.system is always case sensitive.
Control | 1..1
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Example | General: http://www.acme.com/identifiers/patient
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
64. Task.groupIdentifier.value
Definition | The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Short | Order identifier
Comments | If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Control | 1..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Example | General: 123456
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
66. Task.groupIdentifier.period
Definition | Time period during which identifier is/was valid for use.
Short | Time period when id is/was valid for use
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
68. Task.groupIdentifier.assigner
Definition | Organization that issued/manages the identifier.
Short | Organisation that assigned the order identifier
Comments | The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.
Control | 0..1
Type | Reference(Organization)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
70. Task.groupIdentifier.assigner.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
72. Task.groupIdentifier.assigner.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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
Slicing | This element introduces a set of slices on `Task.groupIdentifier.assigner.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
74. Task.groupIdentifier.assigner.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.
Short | Literal 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.
Control | 0..1 This element is affected by the following invariants: ref-1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
76. Task.groupIdentifier.assigner.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).
Short | Type 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.
Control | 0..1
Binding | Unless not suitable, these codes SHALL be taken from ResourceType (extensible to `http://hl7.org/fhir/ValueSet/resource-types|4.0.1` ) Aa resource (or, for logical models, the URI of the logical model).
Type | uri
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
78. Task.groupIdentifier.assigner.identifier
Definition | 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.
Short | Logical 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).
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..1
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
80. Task.groupIdentifier.assigner.display
Definition | Plain text narrative that identifies the resource in addition to the resource reference.
Short | Name of the assigning organisation
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.
Control | 1..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
82. Task.partOf
Definition | Task that this particular task is part of.
Short | Task group of which this task is a part
Comments | This should usually be 0..1.
Control | 1..1
Type | Reference(AU eRequesting Task Group)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor
SHALL:populate | AU eRequesting Placer
SHALL:handle | AU eRequesting Filler
SHALL:handle | AU eRequesting Server
SHALL:able-to-populate | AU eRequesting Server
SHALL:no-error | AU eRequesting Patient
Summary | true
Requirements | Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task).
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
84. Task.status
Definition | The current status of the task.
Short | draft | requested | received | accepted | +
Control | 1..1
Binding | The codes SHALL be taken from AU eRequesting Task Status (required to `http://terminology.hl7.org.au/ValueSet/au-erequesting-task-status` )
Type | code
Is Modifier | true 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 Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
86. Task.statusReason
Definition | An explanation as to why this task is held, failed, was refused, etc.
Short | Reason for current status
Comments | This applies to the current status. Look at the history of the task to see reasons for past statuses.
Control | 0..1
Binding | Codes to identify the reason for current status. These will typically be specific to a particular workflow.
Type | CodeableConcept
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
88. Task.businessStatus
Definition | Contains business-specific nuances of the business state.
Short | Business status of the Task e.g. Booked
Control | 0..1
Binding | Unless not suitable, these codes SHALL be taken from AU eRequesting Task Business Status (extensible to `http://terminology.hl7.org.au/ValueSet/au-erequesting-task-businessstatus` )
Type | CodeableConcept
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:handle | AU eRequesting Placer | from AU eRequesting Task
SHALL:populate-if-known | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | There's often a need to track substates of a task - this is often variable by specific workflow implementation.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
90. 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.
Short | unknown | 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".
Control | 1..1
Binding | The 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.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Fixed Value | `order`
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
92. Task.priority
Definition | Indicates how quickly the Task should be addressed with respect to other requests.
Short | routine | urgent | asap | stat
Control | 0..1
Binding | The codes SHALL be taken from RequestPriority (required to `http://hl7.org/fhir/ValueSet/request-priority|4.0.1` ) The task's priority.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | false
Requirements | Used to identify the service level expected while performing a task.
Meaning if Missing | If missing, this task should be performed with normal priority
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
94. Task.code
Definition | A name or code (or both) briefly describing what the task involves.
Short | Task Type
Comments | The title (eg "My Tasks", "Outstanding Tasks for Patient X") should go into the code.
Control | 0..1
Binding | For example codes, see TaskCode (example to `http://hl7.org/fhir/ValueSet/task-code|4.0.1` ) Codes to identify what the task involves. These will typically be specific to a particular workflow.
Type | CodeableConcept
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
96. Task.description
Definition | A free-text description of what is to be performed.
Short | Human-readable explanation of task
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
98. Task.focus
Definition | The request being actioned or the resource being manipulated by this task.
Short | What 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.).
Control | 1..1
Type | Reference(AU eRequesting CommunicationRequest CopyTo, AU eRequesting CommunicationRequest Patient, AU eRequesting CommunicationRequest Urgent Provider)
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Obligations |
Obligations | Actor
SHALL:populate | AU eRequesting Placer
SHALL:handle | AU eRequesting Filler
SHALL:handle | AU eRequesting Server
SHALL:able-to-populate | AU eRequesting Server
SHALL:no-error | AU eRequesting Patient
Summary | true
Requirements | Used to identify the thing to be done.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
100. Task.for
Definition | The entity who benefits from the performance of the service specified in the task (e.g., the patient).
Short | Beneficiary of the Task
Control | 1..1
Type | Reference(AU Core Patient)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
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 Names | Patient
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
102. Task.encounter
Definition | The healthcare event (e.g. a patient and healthcare provider interaction) during which this task was created.
Short | Healthcare event during which this task originated
Control | 0..1
Type | Reference(Encounter)
Is Modifier | false
Summary | true
Requirements | For some tasks it may be important to know the link between the encounter the task originated within.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
104. 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).
Short | Start and end time of execution
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
106. Task.authoredOn
Definition | The date and time this task was created.
Short | Task Creation Date
Control | 1..1 This element is affected by the following invariants: inv-1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | false
Requirements | Most often used along with lastUpdated to track duration of task to supporting monitoring and management.
Alternate Names | Created Date
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
108. Task.lastModified
Definition | The date and time of last modification to this task.
Short | Task Last Modified Date
Control | 0..1 This element is affected by the following invariants: inv-1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | Used along with history to track task activity and time in a particular task state. This enables monitoring and management.
Alternate Names | Update Date
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
110. Task.requester
Definition | The creator of the task.
Short | Who is asking for task to be done
Control | 1..1
Type | Reference(AU Core PractitionerRole)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
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).
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
112. Task.performerType
Definition | The kind of participant that should perform the task.
Short | Requested performer
Control | 0..*
Binding | The codes SHOULD be taken from ProcedurePerformerRoleCodes (preferred to `http://hl7.org/fhir/ValueSet/performer-role|4.0.1` ) The type(s) of task performers allowed.
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | Use to distinguish tasks on different activity queues.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
114. Task.owner
Definition | Individual organization or Device currently responsible for task execution.
Short | Responsible individual
Comments | Tasks may be created with an owner not yet identified.
Control | 0..1
Type | Reference(AU Core Organization)
Is Modifier | false
Must Support | true
Obligations |
Obligations | Actor | Source
SHALL:populate-if-known | AU eRequesting Placer | from AU eRequesting Task
SHALL:handle | AU eRequesting Filler | from AU eRequesting Task
SHALL:handle | AU eRequesting Server | from AU eRequesting Task
SHALL:able-to-populate | AU eRequesting Server | from AU eRequesting Task
SHALL:no-error | AU eRequesting Patient | from AU eRequesting Task
Summary | true
Requirements | Identifies who is expected to perform this task.
Alternate Names | Performer, Executer
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
116. Task.location
Definition | Principal physical location where the this task is performed.
Short | Where task occurs
Control | 0..1
Type | Reference(Location)
Is Modifier | false
Summary | true
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).
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
118. Task.reasonCode
Definition | A description or code indicating why this task needs to be performed.
Short | Why task is needed
Comments | This should only be included if there is no focus or if it differs from the reason indicated on the focus.
Control | 0..1
Binding | Indicates why the task is needed. E.g. Suspended because patient admitted to hospital.
Type | CodeableConcept
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
120. Task.reasonReference
Definition | A resource reference indicating why this task needs to be performed.
Short | Why task is needed
Comments | 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.
Control | 0..1
Type | Reference(Resource)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
122. Task.insurance
Definition | Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be relevant to the Task.
Short | Associated insurance coverage
Control | 0..*
Type | Reference(Coverage, ClaimResponse)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
124. Task.note
Definition | Free-text information captured about the task as it progresses.
Short | Comments made about the task
Control | 0..*
Type | Annotation
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
126. 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.
Short | Key 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.
Control | 0..*
Type | Reference(Provenance)
Is Modifier | false
Summary | false
Alternate Names | Status History
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
128. 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.
Short | Constraints on fulfillment tasks
Control | 0..1
Type | BackboneElement
Is Modifier | false
Summary | false
Requirements | Sometimes when fulfillment is sought, you don't want full fulfillment.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
130. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
132. 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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
134. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
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 Names | extensions, user content, modifiers
Invariants | 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()`)
136. Task.restriction.repetitions
Definition | Indicates the number of times the requested action should occur.
Short | How many times to repeat
Control | 0..1
Type | positiveInt
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | E.g. order that requests monthly lab tests, fulfillment is sought for 1.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
138. Task.restriction.period
Definition | Over what time-period is fulfillment sought.
Short | When fulfillment sought
Comments | Note that period.high is the due date representing the time by which the task should be completed.
Control | 0..1
Type | Period
Is Modifier | false
Summary | false
Requirements | E.g. order that authorizes 1 year's services. Fulfillment is sought for next 3 months.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
140. Task.restriction.recipient
Definition | For requests that are targeted to more than on potential recipient/target, for whom is fulfillment sought?
Short | For whom is fulfillment sought?
Control | 0..*
Type | Reference(Patient, Practitioner, PractitionerRole, RelatedPerson, Group, Organization)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
142. Task.input
Definition | Additional information that may be needed in the execution of the task.
Short | Information used to perform task
Control | 0..*
Type | BackboneElement
Is Modifier | false
Summary | false
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 Names | Supporting Information
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
144. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
146. 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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
148. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
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 Names | extensions, user content, modifiers
Invariants | 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()`)
150. Task.input.type
Definition | A code or description indicating how the input is intended to be used as part of the task execution.
Short | Label 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.
Control | 1..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.
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | Inputs are named to enable task automation to bind data and pass it from one task to the next.
Alternate Names | Name
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
152. Task.input.value[x]
Definition | The value of the input parameter as a basic type.
Short | Content to use in performing the task
Control | 1..1
Type | Choice 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] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
154. Task.output
Definition | Outputs produced by the Task.
Short | Information produced as part of task
Control | 0..*
Type | BackboneElement
Is Modifier | false
Summary | false
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.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
156. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
158. 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.
Short | Additional 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.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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()`)
160. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
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 Names | extensions, user content, modifiers
Invariants | 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()`)
162. Task.output.type
Definition | The name of the Output parameter.
Short | Label for output
Control | 1..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.
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | Outputs are named to enable task automation to bind data and pass it from one task to the next.
Alternate Names | Name
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
164. Task.output.value[x]
Definition | The value of the Output parameter as a basic type.
Short | Result of output
Control | 1..1
Type | Choice 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] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | Task outputs can take any form.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)