Structured Data Capture
4.0.0 - STU 4 International flag

Structured Data Capture, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 4.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/sdc/ and changes regularly. See the Directory of published versions

Resource Profile: SDCLibrary - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 4

Definitions for the sdc-library resource profile.

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

0. Library
Definition

Sets expectations for SDC-conformant systems around use of libraries.


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
Control10..1*
Is Modifierfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
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}'))
sdc-2: If version is present, versionAlgorithm must be present. (version.exists() implies extension.where(url='http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm[x]').exists())
sdc-3: Semver is the preferred version algorithm - package machinery doesn't work well with artifacts using alternate versioning schemes (extension.where(url='http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm[x]').all(value.ofType(Coding).where(system='http://hl7.org/fhir/version-algorithm' and code='semver').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.extension
Definition

An Extension


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.

ShortExtensionAdditional 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.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 6. Library.extension:versionAlgorithm
    Slice NameversionAlgorithm
    Definition

    Optional Extension Element - found in all resources.

    ShortOptional Extensions Element
    Control0..1
    This element is affected by the following invariants: ele-1
    TypeExtension(http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm%5Bx%5D)
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    8. 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.


    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())
    10. 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.


    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.

    Control10..1
    Typeuri
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    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()))
    12. 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
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    14. 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.

    Control10..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
    Must Supporttrue
    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()))
    16. 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()))
    18. 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
    Summarytrue
    Fixed Value{
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/library-type",
        "code" : "logic-library",
        "display" : "Logic Library"
      }]
    }
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    20. 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 SubjectTypehttp://hl7.org/fhir/ValueSet/subject-type
    (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
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    Summaryfalse
    Meaning if MissingPatient
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    22. 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
    Must Supporttrue
    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()))
    24. Library.relatedArtifact.type
    Definition

    The type of relationship to the related artifact.

    Shortdocumentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
    Control1..1
    BindingThe codes SHALL be taken from RelatedArtifactTypehttp://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1
    (required to http://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1)

    The type of relationship to the related artifact.

    Typecode
    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()))
    26. Library.relatedArtifact.display
    Definition

    A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.

    ShortBrief description of the related artifact
    Control10..1
    Typestring
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    28. Library.relatedArtifact.url
    Definition

    A url for the artifact that can be followed to access the actual content.

    ShortWhere the artifact can be accessed
    Comments

    If a document or resource element is present, this element SHALL NOT be provided (use the url or reference in the Attachment or resource reference).

    Control10..1
    Typeurl
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    30. Library.parameter
    Definition

    The parameter element defines parameters used by the library.

    ShortParameters defined by the library
    Control0..*
    TypeParameterDefinition
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    32. 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
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    34. 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
    Control0..*
    TypeAttachment
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    SlicingThis element introduces a set of slices on Library.content. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ contentType
    • 36. Library.content:cqlContent
      Slice NamecqlContent
      Definition

      The CQL content represented as base-64 encoded data.


      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.

      ShortCQL ContentContents of the library, either embedded or referenced
      Control0..1*
      TypeAttachment
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      38. Library.content:cqlContent.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.

      Pattern Valuetext/cql
      ExampleGeneral: text/plain; charset=UTF-8, image/png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      40. Library.content:cqlContent.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.

      Control10..1
      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()))
      42. Library.content:fhirpathContent
      Slice NamefhirpathContent
      Definition

      The FHIRPath content represented as base-64 encoded data.


      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.

      ShortFHIRPath ContentContents of the library, either embedded or referenced
      Control0..1*
      TypeAttachment
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      44. Library.content:fhirpathContent.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.

      Pattern Valuetext/fhirpath
      ExampleGeneral: text/plain; charset=UTF-8, image/png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      46. Library.content:fhirpathContent.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.

      Control10..1
      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()))
      48. Library.content:queryContent
      Slice NamequeryContent
      Definition

      The query content represented as base-64 encoded data.


      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.

      ShortQuery ContentContents of the library, either embedded or referenced
      Control0..1*
      TypeAttachment
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      50. Library.content:queryContent.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.

      Pattern Valueapplication/x-fhir-query
      ExampleGeneral: text/plain; charset=UTF-8, image/png
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      52. Library.content:queryContent.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.

      Control10..1
      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()))

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

      0. Library
      Definition

      Sets expectations for SDC-conformant systems around use of libraries.

      Invariantssdc-2: If version is present, versionAlgorithm must be present. (version.exists() implies extension.where(url='http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm[x]').exists())
      sdc-3: Semver is the preferred version algorithm - package machinery doesn't work well with artifacts using alternate versioning schemes (extension.where(url='http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm[x]').all(value.ofType(Coding).where(system='http://hl7.org/fhir/version-algorithm' and code='semver').exists()))
      2. Library.extension
      SlicingThis element introduces a set of slices on Library.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 4. Library.extension:versionAlgorithm
        Slice NameversionAlgorithm
        Control0..1
        TypeExtension(http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm%5Bx%5D)
        Must Supporttrue
        6. Library.url
        Control1..?
        Must Supporttrue
        8. Library.version
        NoteThis is a business version Id, not a resource version Id (see discussion)
        Must Supporttrue
        10. Library.name
        Control1..?
        Must Supporttrue
        12. Library.subject[x]
        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
        Must Supporttrue
        14. Library.relatedArtifact
        Must Supporttrue
        16. Library.relatedArtifact.display
        Control1..?
        Must Supporttrue
        18. Library.relatedArtifact.url
        Control1..?
        Must Supporttrue
        20. Library.content
        Must Supporttrue
        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
        • 22. Library.content:cqlContent
          Slice NamecqlContent
          Definition

          The CQL content represented as base-64 encoded data.

          ShortCQL Content
          Control0..1
          Must Supporttrue
          24. Library.content:cqlContent.contentType
          Control1..?
          Must Supporttrue
          Pattern Valuetext/cql
          26. Library.content:cqlContent.data
          Control1..?
          Must Supporttrue
          28. Library.content:fhirpathContent
          Slice NamefhirpathContent
          Definition

          The FHIRPath content represented as base-64 encoded data.

          ShortFHIRPath Content
          Control0..1
          Must Supporttrue
          30. Library.content:fhirpathContent.contentType
          Control1..?
          Must Supporttrue
          Pattern Valuetext/fhirpath
          32. Library.content:fhirpathContent.data
          Control1..?
          Must Supporttrue
          34. Library.content:queryContent
          Slice NamequeryContent
          Definition

          The query content represented as base-64 encoded data.

          ShortQuery Content
          Control0..1
          Must Supporttrue
          36. Library.content:queryContent.contentType
          Control1..?
          Must Supporttrue
          Pattern Valueapplication/x-fhir-query
          38. Library.content:queryContent.data
          Control1..?
          Must Supporttrue

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

          0. Library
          Definition

          Sets expectations for SDC-conformant systems around use of libraries.

          ShortRepresents a library of quality improvement components
          Control1..1
          Is Modifierfalse
          Summaryfalse
          Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
          dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
          dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
          dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
          dom-6: A resource should have narrative for robust management (text.`div`.exists())
          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}'))
          sdc-2: If version is present, versionAlgorithm must be present. (version.exists() implies extension.where(url='http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm[x]').exists())
          sdc-3: Semver is the preferred version algorithm - package machinery doesn't work well with artifacts using alternate versioning schemes (extension.where(url='http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm[x]').all(value.ofType(Coding).where(system='http://hl7.org/fhir/version-algorithm' and code='semver').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

          An Extension

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

            Optional Extension Element - found in all resources.

            ShortOptional Extensions Element
            Control0..1
            This element is affected by the following invariants: ele-1
            TypeExtension(http://hl7.org/fhir/5.0/StructureDefinition/extension-Questionnaire.versionAlgorithm%5Bx%5D)
            Is Modifierfalse
            Must Supporttrue
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            18. 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())
            20. 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.

            Control1..1
            Typeuri
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supporttrue
            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()))
            22. 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()))
            24. 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
            Must Supporttrue
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            26. 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.

            Control1..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
            Must Supporttrue
            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()))
            28. 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()))
            30. 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()))
            32. 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()))
            34. 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()))
            36. 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
            Summarytrue
            Fixed Value{
              "coding" : [{
                "system" : "http://terminology.hl7.org/CodeSystem/library-type",
                "code" : "logic-library",
                "display" : "Logic Library"
              }]
            }
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            38. 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
            Must Supporttrue
            Must Support TypesNo must-support rules about the choice of types/profiles
            Summaryfalse
            Meaning if MissingPatient
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            40. 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()))
            42. 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()))
            44. 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()))
            46. 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()))
            48. 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()))
            50. 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()))
            52. 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()))
            54. 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()))
            56. 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()))
            58. 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()))
            60. 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()))
            62. 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()))
            64. 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()))
            66. 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()))
            68. 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()))
            70. 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()))
            72. 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()))
            74. 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
            Must Supporttrue
            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()))
            76. Library.relatedArtifact.id
            Definition

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

            ShortUnique id for inter-element referencing
            Control0..1
            Typestring
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            78. Library.relatedArtifact.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.relatedArtifact.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 80. Library.relatedArtifact.type
              Definition

              The type of relationship to the related artifact.

              Shortdocumentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
              Control1..1
              BindingThe codes SHALL be taken from RelatedArtifactType
              (required to http://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1)

              The type of relationship to the related artifact.

              Typecode
              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()))
              82. Library.relatedArtifact.label
              Definition

              A short label that can be used to reference the citation from elsewhere in the containing artifact, such as a footnote index.

              ShortShort label
              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()))
              84. Library.relatedArtifact.display
              Definition

              A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.

              ShortBrief description of the related artifact
              Control1..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supporttrue
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              86. Library.relatedArtifact.citation
              Definition

              A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format.

              ShortBibliographic citation for the artifact
              Comments

              Additional structured information about citations should be captured as extensions.

              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()))
              88. Library.relatedArtifact.url
              Definition

              A url for the artifact that can be followed to access the actual content.

              ShortWhere the artifact can be accessed
              Comments

              If a document or resource element is present, this element SHALL NOT be provided (use the url or reference in the Attachment or resource reference).

              Control1..1
              Typeurl
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supporttrue
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              90. Library.relatedArtifact.document
              Definition

              The document being referenced, represented as an attachment. This is exclusive with the resource element.

              ShortWhat document is being referenced
              Control0..1
              TypeAttachment
              Is Modifierfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              92. Library.relatedArtifact.resource
              Definition

              The related resource, such as a library, value set, profile, or other knowledge resource.

              ShortWhat resource is being referenced
              Comments

              If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.

              Control0..1
              Typecanonical(Resource)
              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()))
              94. Library.parameter
              Definition

              The parameter element defines parameters used by the library.

              ShortParameters defined by the library
              Control0..*
              TypeParameterDefinition
              Is Modifierfalse
              Must Supporttrue
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              96. 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
              Must Supporttrue
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              98. 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
              Control0..*
              TypeAttachment
              Is Modifierfalse
              Must Supporttrue
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on Library.content. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ contentType
              • 100. Library.content:cqlContent
                Slice NamecqlContent
                Definition

                The CQL content represented as base-64 encoded data.

                ShortCQL Content
                Control0..1
                TypeAttachment
                Is Modifierfalse
                Must Supporttrue
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                102. Library.content:cqlContent.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
                104. Library.content:cqlContent.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
                • 106. Library.content:cqlContent.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.

                  Pattern Valuetext/cql
                  ExampleGeneral: text/plain; charset=UTF-8, image/png
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  108. Library.content:cqlContent.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.

                  ExampleGeneral: en-AU
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  110. Library.content:cqlContent.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.

                  Control1..1
                  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()))
                  112. Library.content:cqlContent.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
                  Typeurl
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Requirements

                  The data needs to be transmitted by reference.

                  ExampleGeneral: http://www.acme.com/logo-small.png
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  114. Library.content:cqlContent.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()))
                  116. Library.content:cqlContent.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()))
                  118. Library.content:cqlContent.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.

                  ExampleGeneral: Official Corporate Logo
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  120. Library.content:cqlContent.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()))
                  122. Library.content:fhirpathContent
                  Slice NamefhirpathContent
                  Definition

                  The FHIRPath content represented as base-64 encoded data.

                  ShortFHIRPath Content
                  Control0..1
                  TypeAttachment
                  Is Modifierfalse
                  Must Supporttrue
                  Summarytrue
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  124. Library.content:fhirpathContent.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
                  126. Library.content:fhirpathContent.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
                  • 128. Library.content:fhirpathContent.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.

                    Pattern Valuetext/fhirpath
                    ExampleGeneral: text/plain; charset=UTF-8, image/png
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    130. Library.content:fhirpathContent.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.

                    ExampleGeneral: en-AU
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    132. Library.content:fhirpathContent.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.

                    Control1..1
                    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()))
                    134. Library.content:fhirpathContent.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
                    Typeurl
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summarytrue
                    Requirements

                    The data needs to be transmitted by reference.

                    ExampleGeneral: http://www.acme.com/logo-small.png
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    136. Library.content:fhirpathContent.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()))
                    138. Library.content:fhirpathContent.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()))
                    140. Library.content:fhirpathContent.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.

                    ExampleGeneral: Official Corporate Logo
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    142. Library.content:fhirpathContent.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()))
                    144. Library.content:queryContent
                    Slice NamequeryContent
                    Definition

                    The query content represented as base-64 encoded data.

                    ShortQuery Content
                    Control0..1
                    TypeAttachment
                    Is Modifierfalse
                    Must Supporttrue
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    146. Library.content:queryContent.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
                    148. Library.content:queryContent.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
                    • 150. Library.content:queryContent.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.

                      Pattern Valueapplication/x-fhir-query
                      ExampleGeneral: text/plain; charset=UTF-8, image/png
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      152. Library.content:queryContent.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.

                      ExampleGeneral: en-AU
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      154. Library.content:queryContent.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.

                      Control1..1
                      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()))
                      156. Library.content:queryContent.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
                      Typeurl
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Requirements

                      The data needs to be transmitted by reference.

                      ExampleGeneral: http://www.acme.com/logo-small.png
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      158. Library.content:queryContent.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()))
                      160. Library.content:queryContent.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()))
                      162. Library.content:queryContent.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.

                      ExampleGeneral: Official Corporate Logo
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      164. Library.content:queryContent.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()))