Using CQL with FHIR
2.0.0-ballot - STU2Ballot International flag

Using CQL with FHIR, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 2.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/cql-ig/ and changes regularly. See the Directory of published versions

Resource Profile: CQLModelInfo - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 3

Definitions for the cql-modelinfo resource profile.

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

0. Library
Must Supportfalse
Invariantsmil-1: ModelInfo libraries must have an XML or JSON content element (or both) (content.where(contentType = 'application/xml' or contentType = 'application/json').exists())
2. Library.type
Control1..1
TypeCodeableConcept
Must Supporttrue
Pattern Value{
  "coding" : [{
    "system" : "http://terminology.hl7.org/CodeSystem/library-type",
    "code" : "model-definition"
  }]
}
4. Library.content
Control1..*
This element is affected by the following invariants: mil-1
Must Supporttrue
Invariantsmil-2: ModelInfo libraries must have a content element with data or a url (or both) (data.exists() or url.exists())
SlicingThis element introduces a set of slices on Library.content. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ contentType
  • 6. Library.content:xml
    Slice Namexml
    Control0..1
    Must Supporttrue
    Requirements

    A ModelInfo library must provide serialized ModelInfo content or a url to the content

    8. Library.content:xml.contentType
    Control1..1
    Typecode
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    Fixed Valueapplication/xml
    10. Library.content:xml.data
    Control0..1
    This element is affected by the following invariants: mil-2
    Must Supporttrue
    12. Library.content:xml.url
    Control0..1
    This element is affected by the following invariants: mil-2
    Must Supporttrue
    14. Library.content:json
    Slice Namejson
    Control0..1
    Must Supporttrue
    Requirements

    A ModelInfo library must provide serialized ModelInfo content or a url to the content

    16. Library.content:json.contentType
    Control1..1
    Typecode
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    Fixed Valueapplication/json
    18. Library.content:json.data
    Control0..1
    This element is affected by the following invariants: mil-2
    Must Supporttrue
    20. Library.content:json.url
    Control0..1
    This element is affected by the following invariants: mil-2
    Must Supporttrue

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

    0. Library
    Definition

    The Library resource is a general-purpose container for knowledge asset definitions. It can be used to describe and expose existing knowledge assets such as logic libraries and information model descriptions, as well as to describe a collection of knowledge assets.

    ShortRepresents a library of quality improvement components
    Control0..*
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
    dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
    dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
    dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
    dom-6: A resource should have narrative for robust management (text.`div`.exists())
    lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
    mil-1: ModelInfo libraries must have an XML or JSON content element (or both) (content.where(contentType = 'application/xml' or contentType = 'application/json').exists())
    lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
    2. Library.implicitRules
    Definition

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

    ShortA set of rules under which this content was created
    Comments

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

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

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

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

    ShortExtensions that cannot be ignored
    Comments

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

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

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

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

    The status of this library. Enables tracking the life-cycle of the content.

    Shortdraft | active | retired | unknown
    Comments

    Allows filtering of libraries that are appropriate for use vs. not.

    Control1..1
    BindingThe codes SHALL be taken from PublicationStatushttp://hl7.org/fhir/ValueSet/publication-status|4.0.1
    (required to http://hl7.org/fhir/ValueSet/publication-status|4.0.1)

    The lifecycle status of an artifact.

    Typecode
    Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    8. Library.type
    Definition

    Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.

    Shortlogic-library | model-definition | asset-collection | module-definition
    Control1..1
    BindingUnless not suitable, these codes SHALL be taken from LibraryTypehttp://hl7.org/fhir/ValueSet/library-type
    (extensible to http://hl7.org/fhir/ValueSet/library-type)

    The type of knowledge asset this library contains.

    TypeCodeableConcept
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Pattern Value{
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/library-type",
        "code" : "model-definition"
      }]
    }
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    10. Library.content
    Definition

    The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.

    ShortContents of the library, either embedded or referenced
    Control10..*
    This element is affected by the following invariants: mil-1
    TypeAttachment
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    mil-2: ModelInfo libraries must have a content element with data or a url (or both) (data.exists() or url.exists())
    SlicingThis element introduces a set of slices on Library.content. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ contentType
    • 12. Library.content:xml
      Slice Namexml
      Definition

      The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.

      ShortContents of the library, either embedded or referenced
      Control0..1*
      TypeAttachment
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Requirements

      A ModelInfo library must provide serialized ModelInfo content or a url to the content

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      14. Library.content:xml.contentType
      Definition

      Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate.

      ShortMime type of the content, with charset etc.
      Control10..1
      BindingThe codes SHALL be taken from Mime Typeshttp://hl7.org/fhir/ValueSet/mimetypes|4.0.1
      (required to http://hl7.org/fhir/ValueSet/mimetypes|4.0.1)

      The mime type of an attachment. Any valid mime type is allowed.

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

      Processors of the data need to be able to know how to interpret the data.

      Fixed Valueapplication/xml
      Example<br/><b>General</b>:text/plain; charset=UTF-8, image/png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      16. Library.content:xml.data
      Definition

      The actual data of the attachment - a sequence of bytes, base64 encoded.

      ShortData inline, base64ed
      Comments

      The base64-encoded data SHALL be expressed in the same character set as the base resource XML or JSON.

      Control0..1
      This element is affected by the following invariants: mil-2
      Typebase64Binary
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      Summaryfalse
      Requirements

      The data needs to able to be transmitted inline.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      18. Library.content:xml.url
      Definition

      A location where the data can be accessed.

      ShortUri where the data can be found
      Comments

      If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.

      Control0..1
      This element is affected by the following invariants: mil-2
      Typeurl
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      Summarytrue
      Requirements

      The data needs to be transmitted by reference.

      Example<br/><b>General</b>:http://www.acme.com/logo-small.png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      20. Library.content:json
      Slice Namejson
      Definition

      The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.

      ShortContents of the library, either embedded or referenced
      Control0..1*
      TypeAttachment
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Requirements

      A ModelInfo library must provide serialized ModelInfo content or a url to the content

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      22. Library.content:json.contentType
      Definition

      Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate.

      ShortMime type of the content, with charset etc.
      Control10..1
      BindingThe codes SHALL be taken from Mime Typeshttp://hl7.org/fhir/ValueSet/mimetypes|4.0.1
      (required to http://hl7.org/fhir/ValueSet/mimetypes|4.0.1)

      The mime type of an attachment. Any valid mime type is allowed.

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

      Processors of the data need to be able to know how to interpret the data.

      Fixed Valueapplication/json
      Example<br/><b>General</b>:text/plain; charset=UTF-8, image/png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      24. Library.content:json.data
      Definition

      The actual data of the attachment - a sequence of bytes, base64 encoded.

      ShortData inline, base64ed
      Comments

      The base64-encoded data SHALL be expressed in the same character set as the base resource XML or JSON.

      Control0..1
      This element is affected by the following invariants: mil-2
      Typebase64Binary
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      Summaryfalse
      Requirements

      The data needs to able to be transmitted inline.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      26. Library.content:json.url
      Definition

      A location where the data can be accessed.

      ShortUri where the data can be found
      Comments

      If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.

      Control0..1
      This element is affected by the following invariants: mil-2
      Typeurl
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      Summarytrue
      Requirements

      The data needs to be transmitted by reference.

      Example<br/><b>General</b>:http://www.acme.com/logo-small.png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

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

      0. Library
      Definition

      The Library resource is a general-purpose container for knowledge asset definitions. It can be used to describe and expose existing knowledge assets such as logic libraries and information model descriptions, as well as to describe a collection of knowledge assets.

      ShortRepresents a library of quality improvement components
      Control0..*
      Is Modifierfalse
      Must Supportfalse
      Summaryfalse
      Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
      dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
      dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
      dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
      dom-6: A resource should have narrative for robust management (text.`div`.exists())
      lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
      mil-1: ModelInfo libraries must have an XML or JSON content element (or both) (content.where(contentType = 'application/xml' or contentType = 'application/json').exists())
      2. Library.id
      Definition

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

      ShortLogical id of this artifact
      Comments

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

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

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

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

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

      ShortA set of rules under which this content was created
      Comments

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

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

      The base language in which the resource is written.

      ShortLanguage of the resource content
      Comments

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

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

      A human language.

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

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

      ShortText summary of the resource, for human interpretation
      Comments

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

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

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

      ShortContained, inline Resources
      Comments

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

      Control0..*
      TypeResource
      Is Modifierfalse
      Summaryfalse
      Alternate Namesinline resources, anonymous resources, contained resources
      14. Library.extension
      Definition

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

      ShortAdditional content defined by implementations
      Comments

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

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

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

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

      ShortExtensions that cannot be ignored
      Comments

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

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

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

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

      An absolute URI that is used to identify this library when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this library is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the library is stored on different servers.

      ShortCanonical identifier for this library, represented as a URI (globally unique)
      Comments

      Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred. Multiple instances may share the same URL if they have a distinct version.

      The determination of when to create a new version of a resource (same url, new version) vs. defining a new artifact is up to the author. Considerations for making this decision are found in Technical and Business Versions.

      In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the meta.source element to indicate where the current master source of the resource can be found.

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

      Allows the library to be referenced by a single globally unique identifier.

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

      A formal identifier that is used to identify this library when it is represented in other formats, or referenced in a specification, model, design or an instance. e.g. CMS or NQF identifiers for a measure artifact. Note that at least one identifier is required for non-experimental active artifacts.

      ShortAdditional identifier for the library
      Comments

      Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this library outside of FHIR, where it is not possible to use the logical URI.

      NoteThis is a business identifier, not a resource identifier (see discussion)
      Control0..*
      TypeIdentifier
      Is Modifierfalse
      Summarytrue
      Requirements

      Allows externally provided and/or usable business identifiers to be easily associated with the module.

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

      The identifier that is used to identify this version of the library when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the library author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.

      ShortBusiness version of the library
      Comments

      There may be different library instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the library with the format [url]|[version].

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

      A natural language name identifying the library. This name should be usable as an identifier for the module by machine processing applications such as code generation.

      ShortName for this library (computer friendly)
      Comments

      The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.

      Control0..1
      This element is affected by the following invariants: inv-0
      Typestring
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summarytrue
      Requirements

      Support human navigation and code generation.

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

      A short, descriptive, user-friendly title for the library.

      ShortName for this library (human friendly)
      Comments

      This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.

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

      An explanatory or alternate title for the library giving additional information about its content.

      ShortSubordinate title of the library
      Control0..1
      Typestring
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      30. Library.status
      Definition

      The status of this library. Enables tracking the life-cycle of the content.

      Shortdraft | active | retired | unknown
      Comments

      Allows filtering of libraries that are appropriate for use vs. not.

      Control1..1
      BindingThe codes SHALL be taken from PublicationStatus
      (required to http://hl7.org/fhir/ValueSet/publication-status|4.0.1)

      The lifecycle status of an artifact.

      Typecode
      Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      32. Library.experimental
      Definition

      A Boolean value to indicate that this library is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage.

      ShortFor testing purposes, not real usage
      Comments

      Allows filtering of librarys that are appropriate for use versus not.

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

      Enables experimental content to be developed following the same lifecycle that would be used for a production-level library.

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

      Identifies the type of library such as a Logic Library, Model Definition, Asset Collection, or Module Definition.

      Shortlogic-library | model-definition | asset-collection | module-definition
      Control1..1
      BindingUnless not suitable, these codes SHALL be taken from LibraryType
      (extensible to http://hl7.org/fhir/ValueSet/library-type)

      The type of knowledge asset this library contains.

      TypeCodeableConcept
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Pattern Value{
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/library-type",
          "code" : "model-definition"
        }]
      }
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      36. Library.subject[x]
      Definition

      A code or group definition that describes the intended subject of the contents of the library.

      ShortType of individual the library content is focused on
      Control0..1
      BindingUnless not suitable, these codes SHALL be taken from SubjectType
      (extensible to http://hl7.org/fhir/ValueSet/subject-type)

      The possible types of subjects for a library (E.g. Patient, Practitioner, Organization, Location, etc.).

      TypeChoice of: CodeableConcept, Reference(Group)
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Is Modifierfalse
      Summaryfalse
      Meaning if MissingPatient
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      38. Library.date
      Definition

      The date (and optionally time) when the library was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the library changes.

      ShortDate last changed
      Comments

      Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the library. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

      Control0..1
      TypedateTime
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summarytrue
      Alternate NamesRevision Date
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      40. Library.publisher
      Definition

      The name of the organization or individual that published the library.

      ShortName of the publisher (organization or individual)
      Comments

      Usually an organization but may be an individual. The publisher (or steward) of the library is the organization or individual primarily responsible for the maintenance and upkeep of the library. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the library. This item SHOULD be populated unless the information is available from context.

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

      Helps establish the "authority/credibility" of the library. May also allow for contact.

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

      Contact details to assist a user in finding and communicating with the publisher.

      ShortContact details for the publisher
      Comments

      May be a web site, an email address, a telephone number, etc.

      Control0..*
      TypeContactDetail
      Is Modifierfalse
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      44. Library.description
      Definition

      A free text natural language description of the library from a consumer's perspective.

      ShortNatural language description of the library
      Comments

      This description can be used to capture details such as why the library was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the library as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the library is presumed to be the predominant language in the place the library was created).

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

      The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate library instances.

      ShortThe context that the content is intended to support
      Comments

      When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.

      Control0..*
      TypeUsageContext
      Is Modifierfalse
      Summarytrue
      Requirements

      Assist in searching for appropriate content.

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

      A legal or geographic region in which the library is intended to be used.

      ShortIntended jurisdiction for library (if applicable)
      Comments

      It may be possible for the library to be used in jurisdictions other than those for which it was originally designed or intended.

      Control0..*
      BindingUnless not suitable, these codes SHALL be taken from Jurisdiction ValueSet
      (extensible to http://hl7.org/fhir/ValueSet/jurisdiction)

      Countries and regions within which this artifact is targeted for use.

      TypeCodeableConcept
      Is Modifierfalse
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      50. Library.purpose
      Definition

      Explanation of why this library is needed and why it has been designed as it has.

      ShortWhy this library is defined
      Comments

      This element does not describe the usage of the library. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this library.

      Control0..1
      Typemarkdown
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      52. Library.usage
      Definition

      A detailed description of how the library is used from a clinical perspective.

      ShortDescribes the clinical usage of the library
      Control0..1
      Typestring
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      54. Library.copyright
      Definition

      A copyright statement relating to the library and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the library.

      ShortUse and/or publishing restrictions
      Control0..1
      Typemarkdown
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summaryfalse
      Requirements

      Consumers must be able to determine any legal restrictions on the use of the library and/or its content.

      Alternate NamesLicense, Restrictions
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      56. Library.approvalDate
      Definition

      The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.

      ShortWhen the library was approved by publisher
      Comments

      The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

      Control0..1
      Typedate
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      58. Library.lastReviewDate
      Definition

      The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date.

      ShortWhen the library was last reviewed
      Comments

      If specified, this date follows the original approval date.

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

      Gives a sense of how "current" the content is. Resources that have not been reviewed in a long time may have a risk of being less appropriate/relevant.

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

      The period during which the library content was or is planned to be in active use.

      ShortWhen the library is expected to be used
      Comments

      The effective period for a library determines when the content is applicable for usage and is independent of publication and review dates. For example, a measure intended to be used for the year 2016 might be published in 2015.

      Control0..1
      TypePeriod
      Is Modifierfalse
      Summarytrue
      Requirements

      Allows establishing a transition before a resource comes into effect and also allows for a sunsetting process when new versions of the library are or are expected to be used instead.

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

      Descriptive topics related to the content of the library. Topics provide a high-level categorization of the library that can be useful for filtering and searching.

      ShortE.g. Education, Treatment, Assessment, etc.
      Control0..*
      BindingFor example codes, see DefinitionTopic
      (example to http://hl7.org/fhir/ValueSet/definition-topic)

      High-level categorization of the definition, used for searching, sorting, and filtering.

      TypeCodeableConcept
      Is Modifierfalse
      Summaryfalse
      Requirements

      Repositories must be able to determine how to categorize the library so that it can be found by topical searches.

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

      An individiual or organization primarily involved in the creation and maintenance of the content.

      ShortWho authored the content
      Control0..*
      TypeContactDetail
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      66. Library.editor
      Definition

      An individual or organization primarily responsible for internal coherence of the content.

      ShortWho edited the content
      Control0..*
      TypeContactDetail
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      68. Library.reviewer
      Definition

      An individual or organization primarily responsible for review of some aspect of the content.

      ShortWho reviewed the content
      Control0..*
      TypeContactDetail
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      70. Library.endorser
      Definition

      An individual or organization responsible for officially endorsing the content for use in some setting.

      ShortWho endorsed the content
      Control0..*
      TypeContactDetail
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      72. Library.relatedArtifact
      Definition

      Related artifacts such as additional documentation, justification, or bibliographic references.

      ShortAdditional documentation, citations, etc.
      Comments

      Each related artifact is either an attachment, or a reference to another resource, but not both.

      Control0..*
      TypeRelatedArtifact
      Is Modifierfalse
      Summaryfalse
      Requirements

      Libraries must be able to provide enough information for consumers of the content (and/or interventions or results produced by the content) to be able to determine and understand the justification for and evidence in support of the content.

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

      The parameter element defines parameters used by the library.

      ShortParameters defined by the library
      Control0..*
      TypeParameterDefinition
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      76. Library.dataRequirement
      Definition

      Describes a set of data that must be provided in order to be able to successfully perform the computations defined by the library.

      ShortWhat data is referenced by this library
      Control0..*
      TypeDataRequirement
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      78. Library.content
      Definition

      The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.

      ShortContents of the library, either embedded or referenced
      Control1..*
      This element is affected by the following invariants: mil-1
      TypeAttachment
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      mil-2: ModelInfo libraries must have a content element with data or a url (or both) (data.exists() or url.exists())
      SlicingThis element introduces a set of slices on Library.content. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ contentType
      • 80. Library.content:xml
        Slice Namexml
        Definition

        The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.

        ShortContents of the library, either embedded or referenced
        Control0..1
        TypeAttachment
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        A ModelInfo library must provide serialized ModelInfo content or a url to the content

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

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

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

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

        ShortAdditional content defined by implementations
        Comments

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

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

          Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate.

          ShortMime type of the content, with charset etc.
          Control1..1
          BindingThe codes SHALL be taken from Mime Types
          (required to http://hl7.org/fhir/ValueSet/mimetypes|4.0.1)

          The mime type of an attachment. Any valid mime type is allowed.

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

          Processors of the data need to be able to know how to interpret the data.

          Fixed Valueapplication/xml
          Example<br/><b>General</b>:text/plain; charset=UTF-8, image/png
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          88. Library.content:xml.language
          Definition

          The human language of the content. The value can be any valid value according to BCP 47.

          ShortHuman language of the content (BCP-47)
          Control0..1
          BindingThe codes SHOULD be taken from CommonLanguages
          (preferred to http://hl7.org/fhir/ValueSet/languages)

          A human language.

          Additional BindingsPurpose
          AllLanguagesMax Binding
          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          Users need to be able to choose between the languages in a set of attachments.

          Example<br/><b>General</b>:en-AU
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          90. Library.content:xml.data
          Definition

          The actual data of the attachment - a sequence of bytes, base64 encoded.

          ShortData inline, base64ed
          Comments

          The base64-encoded data SHALL be expressed in the same character set as the base resource XML or JSON.

          Control0..1
          This element is affected by the following invariants: mil-2
          Typebase64Binary
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summaryfalse
          Requirements

          The data needs to able to be transmitted inline.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          92. Library.content:xml.url
          Definition

          A location where the data can be accessed.

          ShortUri where the data can be found
          Comments

          If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.

          Control0..1
          This element is affected by the following invariants: mil-2
          Typeurl
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summarytrue
          Requirements

          The data needs to be transmitted by reference.

          Example<br/><b>General</b>:http://www.acme.com/logo-small.png
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          94. Library.content:xml.size
          Definition

          The number of bytes of data that make up this attachment (before base64 encoding, if that is done).

          ShortNumber of bytes of content (if url provided)
          Comments

          The number of bytes is redundant if the data is provided as a base64binary, but is useful if the data is provided as a url reference.

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

          Representing the size allows applications to determine whether they should fetch the content automatically in advance, or refuse to fetch it at all.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          96. Library.content:xml.hash
          Definition

          The calculated hash of the data using SHA-1. Represented using base64.

          ShortHash of the data (sha-1, base64ed)
          Comments

          The hash is calculated on the data prior to base64 encoding, if the data is based64 encoded. The hash is not intended to support digital signatures. Where protection against malicious threats a digital signature should be considered, see Provenance.signature for mechanism to protect a resource with a digital signature.

          Control0..1
          Typebase64Binary
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          Included so that applications can verify that the contents of a location have not changed due to technical failures (e.g., storage rot, transport glitch, incorrect version).

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          98. Library.content:xml.title
          Definition

          A label or set of text to display in place of the data.

          ShortLabel to display in place of the data
          Control0..1
          Typestring
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          Applications need a label to display to a human user in place of the actual data if the data cannot be rendered or perceived by the viewer.

          Example<br/><b>General</b>:Official Corporate Logo
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          100. Library.content:xml.creation
          Definition

          The date that the attachment was first created.

          ShortDate attachment was first created
          Control0..1
          TypedateTime
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summarytrue
          Requirements

          This is often tracked as an integrity issue for use of the attachment.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          102. Library.content:json
          Slice Namejson
          Definition

          The content of the library as an Attachment. The content may be a reference to a url, or may be directly embedded as a base-64 string. Either way, the contentType of the attachment determines how to interpret the content.

          ShortContents of the library, either embedded or referenced
          Control0..1
          TypeAttachment
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          A ModelInfo library must provide serialized ModelInfo content or a url to the content

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

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

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

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

          ShortAdditional content defined by implementations
          Comments

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

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

            Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate.

            ShortMime type of the content, with charset etc.
            Control1..1
            BindingThe codes SHALL be taken from Mime Types
            (required to http://hl7.org/fhir/ValueSet/mimetypes|4.0.1)

            The mime type of an attachment. Any valid mime type is allowed.

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

            Processors of the data need to be able to know how to interpret the data.

            Fixed Valueapplication/json
            Example<br/><b>General</b>:text/plain; charset=UTF-8, image/png
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            110. Library.content:json.language
            Definition

            The human language of the content. The value can be any valid value according to BCP 47.

            ShortHuman language of the content (BCP-47)
            Control0..1
            BindingThe codes SHOULD be taken from CommonLanguages
            (preferred to http://hl7.org/fhir/ValueSet/languages)

            A human language.

            Additional BindingsPurpose
            AllLanguagesMax Binding
            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Users need to be able to choose between the languages in a set of attachments.

            Example<br/><b>General</b>:en-AU
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            112. Library.content:json.data
            Definition

            The actual data of the attachment - a sequence of bytes, base64 encoded.

            ShortData inline, base64ed
            Comments

            The base64-encoded data SHALL be expressed in the same character set as the base resource XML or JSON.

            Control0..1
            This element is affected by the following invariants: mil-2
            Typebase64Binary
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supporttrue
            Summaryfalse
            Requirements

            The data needs to able to be transmitted inline.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            114. Library.content:json.url
            Definition

            A location where the data can be accessed.

            ShortUri where the data can be found
            Comments

            If both data and url are provided, the url SHALL point to the same content as the data contains. Urls may be relative references or may reference transient locations such as a wrapping envelope using cid: though this has ramifications for using signatures. Relative URLs are interpreted relative to the service url, like a resource reference, rather than relative to the resource itself. If a URL is provided, it SHALL resolve to actual data.

            Control0..1
            This element is affected by the following invariants: mil-2
            Typeurl
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supporttrue
            Summarytrue
            Requirements

            The data needs to be transmitted by reference.

            Example<br/><b>General</b>:http://www.acme.com/logo-small.png
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            116. Library.content:json.size
            Definition

            The number of bytes of data that make up this attachment (before base64 encoding, if that is done).

            ShortNumber of bytes of content (if url provided)
            Comments

            The number of bytes is redundant if the data is provided as a base64binary, but is useful if the data is provided as a url reference.

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

            Representing the size allows applications to determine whether they should fetch the content automatically in advance, or refuse to fetch it at all.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            118. Library.content:json.hash
            Definition

            The calculated hash of the data using SHA-1. Represented using base64.

            ShortHash of the data (sha-1, base64ed)
            Comments

            The hash is calculated on the data prior to base64 encoding, if the data is based64 encoded. The hash is not intended to support digital signatures. Where protection against malicious threats a digital signature should be considered, see Provenance.signature for mechanism to protect a resource with a digital signature.

            Control0..1
            Typebase64Binary
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Included so that applications can verify that the contents of a location have not changed due to technical failures (e.g., storage rot, transport glitch, incorrect version).

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            120. Library.content:json.title
            Definition

            A label or set of text to display in place of the data.

            ShortLabel to display in place of the data
            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Applications need a label to display to a human user in place of the actual data if the data cannot be rendered or perceived by the viewer.

            Example<br/><b>General</b>:Official Corporate Logo
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            122. Library.content:json.creation
            Definition

            The date that the attachment was first created.

            ShortDate attachment was first created
            Control0..1
            TypedateTime
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            This is often tracked as an integrity issue for use of the attachment.

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