ext-R4B-ElementDefinition.defaultValue
type: StructureDefinition
node role: treeRoot
id:
  v: ext-R4B-ElementDefinition.defaultValue
text:
  status:
    v: extensions
  div:
    v: Generated Narrative: StructureDefinition ext-R4B-ElementDefinition.defaultValue Name Flags Card. Type Description & Constraints<img src="[binary]" alt="doco" style="background-color: inherit"/> Extension 0..1 Extension(5.0.0) R4B: defaultValue additional types #xD; Slices for extension 0..* Extension Extension Slice: Unordered, Open by value:url #xD; extension:_datatype 1..1 Extension DataType slice for a FHIR R4B `Contributor` value #xD; url 1..1 uri "http://hl7.org/fhir/StructureDefinition/_datatype" #xD; value[x] 1..1 string Value of extension Fixed Value: Contributor #xD; extension:type 1..1 Extension R4B: type #xD; url 1..1 uri "type" #xD; value[x] 1..1 code author | editor | reviewer | endorser Binding: ContributorType (required) #xD; extension:name 1..1 Extension R4B: name #xD; url 1..1 uri "name" #xD; value[x] 1..1 string Who contributed the content #xD; extension:contact 0..* Extension R4B: contact #xD; url 1..1 uri "contact" #xD; value[x] 0..1 ContactDetail Contact details of the contributor #xD; url 1..1 uri "http://hl7.org/fhir/4.3/StructureDefinition/extension-ElementDefinition.defaultValue" #xD; value[x] 0..0 Value of extension #xD; <img src="[binary]" alt="doco" style="background-color: inherit"/> Documentation for this format
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-wg
    l: structuredefinition-wg
  value: Code
    v: fhir
extension:
  extension:
    url:
      v: packageId
      l: packageId
    value: Id
      v: hl7.fhir.uv.xver-r4b.r5
  extension:
    url:
      v: version
      l: version
    value: String
      v: 0.1.0
  extension:
    url:
      v: uri
      l: uri
    value: Uri
      v: http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r5
      l: hl7.fhir.uv.xver-r4b.r5
  url:
    v: http://hl7.org/fhir/StructureDefinition/package-source
    l: package-source
extension:
  extension:
    url:
      v: startFhirVersion
      l: startFhirVersion
    value: Code
      v: 5.0
  extension:
    url:
      v: endFhirVersion
      l: endFhirVersion
    value: Code
      v: 5.0
  url:
    v: http://hl7.org/fhir/StructureDefinition/version-specific-use
    l: version-specific-use
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics
    l: structuredefinition-type-characteristics
  value: Code
    v: can-bind
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm
    l: structuredefinition-fmm
  value: Integer
    v: 0
    extension:
      url:
        v: http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom
        l: structuredefinition-conformance-derivedFrom
      value: Canonical
        v: http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r5
        l: hl7.fhir.uv.xver-r4b.r5
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status
    l: structuredefinition-standards-status
  value: Code
    v: trial-use
    extension:
      url:
        v: http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom
        l: structuredefinition-conformance-derivedFrom
      value: Canonical
        v: http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r5
        l: hl7.fhir.uv.xver-r4b.r5
url:
  v: http://hl7.org/fhir/4.3/StructureDefinition/extension-ElementDefinition.defaultValue
  l: extension-ElementDefinition.defaultValue
version:
  v: 0.1.0
name:
  v: ExtensionElementDefinition_DefaultValue
title:
  v: R4B: defaultValue additional types
status:
  v: active
experimental:
  v: false
date:
  v: 2026-03-17T21:02:03.8104715+00:00
publisher:
  v: FHIR Infrastructure
contact:
  name:
    v: FHIR Infrastructure
  telecom:
    system:
      v: url
    value:
      v: http://www.hl7.org/Special/committees/fiwg
description:
  v: R4B: `ElementDefinition.defaultValue[x]` additional types (Contributor)
jurisdiction:
  coding:
    system:
      v: http://unstats.un.org/unsd/methods/m49/m49.htm
      l: m49.htm
    code:
      v: 001
    display:
      v: World
purpose:
  v: This extension is part of the cross-version definitions generated to enable use of the element `ElementDefinition.defaultValue[x]` as defined in FHIR R4B in FHIR R5. The source element is defined as: `ElementDefinition.defaultValue[x]` 0..1 `Address, Age, Annotation, Attachment, base64Binary, boolean, canonical, code, CodeableConcept, CodeableReference, Coding, ContactDetail, ContactPoint, Contributor, Count, DataRequirement, date, dateTime, decimal, Distance, Dosage, Duration, Expression, HumanName, id, Identifier, instant, integer, markdown, Money, oid, ParameterDefinition, Period, positiveInt, Quantity, Range, Ratio, RatioRange, Reference, RelatedArtifact, SampledData, Signature, string, time, Timing, TriggerDefinition, unsignedInt, uri, url, UsageContext, uuid` Following are the generation technical comments: Element `ElementDefinition.defaultValue[x]` is mapped to FHIR R5 element `ElementDefinition.defaultValue[x]` as `RelatedTo`. The mappings for `ElementDefinition.defaultValue[x]` do not cover the following types: Contributor. The target context `ElementDefinition.defaultValue[x]` is a choice-type element and cannot directly hold extensions. The context is moved up to parent element `ElementDefinition`.
fhir version:
  v: 5.0.0
mapping:
  identity:
    v: rim
  uri:
    v: http://hl7.org/v3
    l: v3
  name:
    v: RIM Mapping
kind:
  v: complex-type
abstract:
  v: false
context:
  type:
    v: element
  expression:
    v: ElementDefinition
type:
  v: Extension
  l: Extension
base definition:
  v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
  l: http://hl7.org/fhir/StructureDefinition/Extension
derivation:
  v: constraint
snapshot:
  extension:
    url:
      v: http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version
      l: snapshot-base-version
    value: String
      v: 5.0.0
  element:
    id:
      v: Extension
    path:
      v: Extension
    short:
      v: R4B: defaultValue additional types
    definition:
      v: R4B: `ElementDefinition.defaultValue[x]` additional types (Contributor)
    comment:
      v: Element `ElementDefinition.defaultValue[x]` is mapped to FHIR R5 element `ElementDefinition.defaultValue[x]` as `RelatedTo`. The mappings for `ElementDefinition.defaultValue[x]` do not cover the following types: Contributor. The target context `ElementDefinition.defaultValue[x]` is a choice-type element and cannot directly hold extensions. The context is moved up to parent element `ElementDefinition`. Specifying a default value means that the property can never been unknown - it must always have a value. Further, the default value can never be changed, or changed in constraints on content models. Defining default values creates many difficulties in implementation (e.g. when is a value missing?). For these reasons, default values are (and should be) used extremely sparingly. No default values are ever defined in the FHIR specification, nor can they be defined in constraints ("profiles") on data types or resources. This element only exists so that default values may be defined in logical models.
    min:
      v: 0
    max:
      v: 1
    base:
      path:
        v: Extension
      min:
        v: 0
      max:
        v: *
    constraint:
      key:
        v: ele-1
      severity:
        v: error
      human:
        v: All FHIR elements must have a @value or children
      expression:
        v: hasValue() or (children().count() > id.count())
      source:
        v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
        l: http://hl7.org/fhir/StructureDefinition/Element
    constraint:
      key:
        v: ext-1
      severity:
        v: error
      human:
        v: Must have either extensions or value[x], not both
      expression:
        v: extension.exists() != value.exists()
      source:
        v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
        l: http://hl7.org/fhir/StructureDefinition/Extension

v: false

id:
  v: Extension.id
path:
  v: Extension.id
representation:
  v: xmlAttr
short:
  v: Unique id for inter-element referencing
definition:
  v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Element.id
  min:
    v: 0
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: id
      l: id
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
condition:
  v: ele-1
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension
path:
  v: Extension.extension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  ordered:
    v: false
  rules:
    v: open
short:
  v: Extension
definition:
  v: An Extension
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false

id:
  v: Extension.extension:_datatype
path:
  v: Extension.extension
slice name:
  v: _datatype
short:
  v: DataType slice for a FHIR R4B `Contributor` value
definition:
  v: Slice to indicate the presence of a R4B `Contributor` in FHIR R5
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false

id:
  v: Extension.extension:_datatype.id
path:
  v: Extension.extension.id
representation:
  v: xmlAttr
short:
  v: Unique id for inter-element referencing
definition:
  v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Element.id
  min:
    v: 0
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: id
      l: id
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
condition:
  v: ele-1
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:_datatype.extension
path:
  v: Extension.extension.extension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  rules:
    v: open
short:
  v: Additional content defined by implementations
definition:
  v: 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 managable, 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.
comment:
  v: 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.
alias:
  v: extensions
alias:
  v: user content
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:_datatype.url
path:
  v: Extension.extension.url
representation:
  v: xmlAttr
short:
  v: identifies the meaning of the extension
definition:
  v: Source of the definition for the extension code - a logical name or a URL.
comment:
  v: The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: uri
      l: uri
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
fixed: Uri
  v: http://hl7.org/fhir/StructureDefinition/_datatype
  l: datatype
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:_datatype.value[x]
path:
  v: Extension.extension.value[x]
short:
  v: Value of extension
definition:
  v: Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).
comment:
  v: Must be: Contributor
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: string
    l: string
fixed: String
  v: Contributor
condition:
  v: ext-1
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:type
path:
  v: Extension.extension
slice name:
  v: type
short:
  v: R4B: type
definition:
  v: R4B: `Contributor.type`
comment:
  v: Element `Contributor.type` is mapped to FHIR R5 element `Contributor.type` as `Equivalent`.
requirements:
  v: Element `Contributor.type` is mapped to FHIR R5 element `Contributor.type` as `Equivalent`.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false

id:
  v: Extension.extension:type.id
path:
  v: Extension.extension.id
representation:
  v: xmlAttr
short:
  v: Unique id for inter-element referencing
definition:
  v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Element.id
  min:
    v: 0
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: id
      l: id
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
condition:
  v: ele-1
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:type.extension
path:
  v: Extension.extension.extension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  rules:
    v: open
short:
  v: Additional content defined by implementations
definition:
  v: 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 managable, 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.
comment:
  v: 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.
alias:
  v: extensions
alias:
  v: user content
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:type.url
path:
  v: Extension.extension.url
representation:
  v: xmlAttr
short:
  v: identifies the meaning of the extension
definition:
  v: Source of the definition for the extension code - a logical name or a URL.
comment:
  v: The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: uri
      l: uri
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
fixed: Uri
  v: type
  l: type
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:type.value[x]
path:
  v: Extension.extension.value[x]
short:
  v: author | editor | reviewer | endorser
definition:
  v: The type of contributor.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: code
    l: code
condition:
  v: ext-1
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
is modifier:
  v: false
is summary:
  v: false
binding:
  strength:
    v: required
  value set:
    v: http://hl7.org/fhir/ValueSet/contributor-type|5.0.0
    l: http://hl7.org/fhir/ValueSet/contributor-type
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:name
path:
  v: Extension.extension
slice name:
  v: name
short:
  v: R4B: name
definition:
  v: R4B: `Contributor.name`
comment:
  v: Element `Contributor.name` is mapped to FHIR R5 element `Contributor.name` as `Equivalent`.
requirements:
  v: Element `Contributor.name` is mapped to FHIR R5 element `Contributor.name` as `Equivalent`.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false

id:
  v: Extension.extension:name.id
path:
  v: Extension.extension.id
representation:
  v: xmlAttr
short:
  v: Unique id for inter-element referencing
definition:
  v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Element.id
  min:
    v: 0
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: id
      l: id
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
condition:
  v: ele-1
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:name.extension
path:
  v: Extension.extension.extension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  rules:
    v: open
short:
  v: Additional content defined by implementations
definition:
  v: 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 managable, 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.
comment:
  v: 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.
alias:
  v: extensions
alias:
  v: user content
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:name.url
path:
  v: Extension.extension.url
representation:
  v: xmlAttr
short:
  v: identifies the meaning of the extension
definition:
  v: Source of the definition for the extension code - a logical name or a URL.
comment:
  v: The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: uri
      l: uri
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
fixed: Uri
  v: name
  l: name
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:name.value[x]
path:
  v: Extension.extension.value[x]
short:
  v: Who contributed the content
definition:
  v: The name of the individual or organization responsible for the contribution.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: string
    l: string
condition:
  v: ext-1
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:contact
path:
  v: Extension.extension
slice name:
  v: contact
short:
  v: R4B: contact
definition:
  v: R4B: `Contributor.contact`
comment:
  v: Element `Contributor.contact` is mapped to FHIR R5 element `Contributor.contact` as `Equivalent`.
requirements:
  v: Element `Contributor.contact` is mapped to FHIR R5 element `Contributor.contact` as `Equivalent`.
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false

id:
  v: Extension.extension:contact.id
path:
  v: Extension.extension.id
representation:
  v: xmlAttr
short:
  v: Unique id for inter-element referencing
definition:
  v: Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Element.id
  min:
    v: 0
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: id
      l: id
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
condition:
  v: ele-1
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:contact.extension
path:
  v: Extension.extension.extension
slicing:
  discriminator:
    type:
      v: value
    path:
      v: url
  description:
    v: Extensions are always sliced by (at least) url
  rules:
    v: open
short:
  v: Additional content defined by implementations
definition:
  v: 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 managable, 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.
comment:
  v: 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.
alias:
  v: extensions
alias:
  v: user content
min:
  v: 0
max:
  v: *
base:
  path:
    v: Element.extension
  min:
    v: 0
  max:
    v: *
type:
  code:
    v: Extension
    l: Extension
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
constraint:
  key:
    v: ext-1
  severity:
    v: error
  human:
    v: Must have either extensions or value[x], not both
  expression:
    v: extension.exists() != value.exists()
  source:
    v: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Extension
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: n/a

id:
  v: Extension.extension:contact.url
path:
  v: Extension.extension.url
representation:
  v: xmlAttr
short:
  v: identifies the meaning of the extension
definition:
  v: Source of the definition for the extension code - a logical name or a URL.
comment:
  v: The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: uri
      l: uri
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
fixed: Uri
  v: contact
  l: contact
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.extension:contact.value[x]
path:
  v: Extension.extension.value[x]
short:
  v: Contact details of the contributor
definition:
  v: Contact details to assist a user in finding and communicating with the contributor.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: ContactDetail
    l: ContactDetail
condition:
  v: ext-1
constraint:
  key:
    v: ele-1
  severity:
    v: error
  human:
    v: All FHIR elements must have a @value or children
  expression:
    v: hasValue() or (children().count() > id.count())
  source:
    v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
    l: http://hl7.org/fhir/StructureDefinition/Element
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.url
path:
  v: Extension.url
representation:
  v: xmlAttr
short:
  v: identifies the meaning of the extension
definition:
  v: Source of the definition for the extension code - a logical name or a URL.
comment:
  v: The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
type:
  extension:
    url:
      v: http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type
      l: structuredefinition-fhir-type
    value: Url
      v: uri
      l: uri
  code:
    v: http://hl7.org/fhirpath/System.String
    l: System.String
fixed: Uri
  v: http://hl7.org/fhir/4.3/StructureDefinition/extension-ElementDefinition.defaultValue
  l: extension-ElementDefinition.defaultValue
is modifier:
  v: false
is summary:
  v: false
mapping:
  identity:
    v: rim
  map:
    v: N/A

id:
  v: Extension.value[x]
path:
  v: Extension.value[x]
short:
  v: Value of extension
definition:
  v: Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).
min:
  v: 0
max:
  v: 0
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: base64Binary
    l: base64Binary
type:
  code:
    v: boolean
    l: boolean
type:
  code:
    v: canonical
    l: canonical
type:
  code:
    v: code
    l: code
type:
  code:
    v: date
    l: date
type:
  code:
    v: dateTime
    l: dateTime
type:
  code:
    v: decimal
    l: decimal
type:
  code:
    v: id
    l: id
type:
  code:
    v: instant
    l: instant
type:
  code:
    v: integer
    l: integer
type:
  code:
    v: integer64
    l: integer64
type:
  code:
    v: markdown
    l: markdown
type:
  code:
    v: oid
    l: oid
type:
  code:
    v: positiveInt
    l: positiveInt
type:
  code:
    v: string
    l: string
type:
  code:
    v: time
    l: time
type:
  code:
    v: unsignedInt
    l: unsignedInt
type:
  code:
    v: uri
    l: uri
type:
  code:
    v: url
    l: url
type:
  code:
    v: uuid
    l: uuid
type:
  code:
    v: Address
    l: Address
type:
  code:
    v: Age
    l: Age
type:
  code:
    v: Annotation
    l: Annotation
type:
  code:
    v: Attachment
    l: Attachment
type:
  code:
    v: CodeableConcept
    l: CodeableConcept
type:
  code:
    v: CodeableReference
    l: CodeableReference
type:
  code:
    v: Coding
    l: Coding
type:
  code:
    v: ContactPoint
    l: ContactPoint
type:
  code:
    v: Count
    l: Count
type:
  code:
    v: Distance
    l: Distance
type:
  code:
    v: Duration
    l: Duration
type:
  code:
    v: HumanName
    l: HumanName
type:
  code:
    v: Identifier
    l: Identifier
type:
  code:
    v: Money
    l: Money
type:
  code:
    v: Period
    l: Period
type:
  code:
    v: Quantity
    l: Quantity
type:
  code:
    v: Range
    l: Range
type:
  code:
    v: Ratio
    l: Ratio
type:
  code:
    v: RatioRange
    l: RatioRange
type:
  code:
    v: Reference
    l: Reference
type:
  code:
    v: SampledData
    l: SampledData
type:
  code:
    v: Signature
    l: Signature
type:
  code:
    v: Timing
    l: Timing
type:
  code:
    v: ContactDetail
    l: ContactDetail
type:
  code:
    v: DataRequirement
    l: DataRequirement
type:
  code:
    v: Expression
    l: Expression

code:
  v: ParameterDefinition
  l: ParameterDefinition

code:
  v: RelatedArtifact
  l: RelatedArtifact

code:
  v: TriggerDefinition
  l: TriggerDefinition

code:
  v: UsageContext
  l: UsageContext

code:
  v: Availability
  l: Availability

code:
  v: ExtendedContactDetail
  l: ExtendedContactDetail

code:
  v: Dosage
  l: Dosage

code:
  v: Meta
  l: Meta

v: ext-1

key:
  v: ele-1
severity:
  v: error
human:
  v: All FHIR elements must have a @value or children
expression:
  v: hasValue() or (children().count() > id.count())
source:
  v: http://hl7.org/fhir/StructureDefinition/Element|5.0.0
  l: http://hl7.org/fhir/StructureDefinition/Element

v: false

v: false

identity:
  v: rim
map:
  v: N/A

element:
  id:
    v: Extension
  path:
    v: Extension
  short:
    v: R4B: defaultValue additional types
  definition:
    v: R4B: `ElementDefinition.defaultValue[x]` additional types (Contributor)
  comment:
    v: Element `ElementDefinition.defaultValue[x]` is mapped to FHIR R5 element `ElementDefinition.defaultValue[x]` as `RelatedTo`. The mappings for `ElementDefinition.defaultValue[x]` do not cover the following types: Contributor. The target context `ElementDefinition.defaultValue[x]` is a choice-type element and cannot directly hold extensions. The context is moved up to parent element `ElementDefinition`. Specifying a default value means that the property can never been unknown - it must always have a value. Further, the default value can never be changed, or changed in constraints on content models. Defining default values creates many difficulties in implementation (e.g. when is a value missing?). For these reasons, default values are (and should be) used extremely sparingly. No default values are ever defined in the FHIR specification, nor can they be defined in constraints ("profiles") on data types or resources. This element only exists so that default values may be defined in logical models.
  min:
    v: 0
  max:
    v: 1
  base:
    path:
      v: Extension
    min:
      v: 0
    max:
      v: *
  is modifier:
    v: false
element:
  id:
    v: Extension.extension
  path:
    v: Extension.extension
  slicing:
    discriminator:
      type:
        v: value
      path:
        v: url
    ordered:
      v: false
    rules:
      v: open
  min:
    v: 0
  max:
    v: *
  base:
    path:
      v: Extension.extension
    min:
      v: 0
    max:
      v: *
element:
  id:
    v: Extension.extension:_datatype
  path:
    v: Extension.extension
  slice name:
    v: _datatype
  short:
    v: DataType slice for a FHIR R4B `Contributor` value
  definition:
    v: Slice to indicate the presence of a R4B `Contributor` in FHIR R5
  min:
    v: 1
  max:
    v: 1
  base:
    path:
      v: Extension.extension
    min:
      v: 0
    max:
      v: *
element:
  id:
    v: Extension.extension:_datatype.url
  path:
    v: Extension.extension.url
  min:
    v: 1
  max:
    v: 1
  base:
    path:
      v: Extension.url
    min:
      v: 1
    max:
      v: 1
  fixed: Uri
    v: http://hl7.org/fhir/StructureDefinition/_datatype
    l: datatype
element:
  id:
    v: Extension.extension:_datatype.value[x]
  path:
    v: Extension.extension.value[x]
  comment:
    v: Must be: Contributor
  min:
    v: 1
  max:
    v: 1
  base:
    path:
      v: Extension.value[x]
    min:
      v: 0
    max:
      v: 1
  type:
    code:
      v: string
      l: string
  fixed: String
    v: Contributor
element:
  id:
    v: Extension.extension:type
  path:
    v: Extension.extension
  slice name:
    v: type
  short:
    v: R4B: type
  definition:
    v: R4B: `Contributor.type`
  comment:
    v: Element `Contributor.type` is mapped to FHIR R5 element `Contributor.type` as `Equivalent`.
  requirements:
    v: Element `Contributor.type` is mapped to FHIR R5 element `Contributor.type` as `Equivalent`.
  min:
    v: 1
  max:
    v: 1
  base:
    path:
      v: Extension.extension
    min:
      v: 0
    max:
      v: *
element:
  id:
    v: Extension.extension:type.url
  path:
    v: Extension.extension.url
  min:
    v: 1
  max:
    v: 1
  base:
    path:
      v: Extension.url
    min:
      v: 1
    max:
      v: 1
  fixed: Uri
    v: type
    l: type
element:
  id:
    v: Extension.extension:type.value[x]
  path:
    v: Extension.extension.value[x]
  short:
    v: author | editor | reviewer | endorser
  definition:
    v: The type of contributor.
  min:
    v: 1
  max:
    v: 1
  base:
    path:
      v: Extension.value[x]
    min:
      v: 0
    max:
      v: 1
  type:
    code:
      v: code
      l: code
  binding:
    strength:
      v: required
    value set:
      v: http://hl7.org/fhir/ValueSet/contributor-type|5.0.0
      l: http://hl7.org/fhir/ValueSet/contributor-type
element:
  id:
    v: Extension.extension:name
  path:
    v: Extension.extension
  slice name:
    v: name
  short:
    v: R4B: name
  definition:
    v: R4B: `Contributor.name`

v: Element `Contributor.name` is mapped to FHIR R5 element `Contributor.name` as `Equivalent`.

v: Element `Contributor.name` is mapped to FHIR R5 element `Contributor.name` as `Equivalent`.

v: 1

v: 1

path:
  v: Extension.extension
min:
  v: 0
max:
  v: *

id:
  v: Extension.extension:name.url
path:
  v: Extension.extension.url
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
fixed: Uri
  v: name
  l: name

id:
  v: Extension.extension:name.value[x]
path:
  v: Extension.extension.value[x]
short:
  v: Who contributed the content
definition:
  v: The name of the individual or organization responsible for the contribution.
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: string
    l: string

id:
  v: Extension.extension:contact
path:
  v: Extension.extension
slice name:
  v: contact
short:
  v: R4B: contact
definition:
  v: R4B: `Contributor.contact`
comment:
  v: Element `Contributor.contact` is mapped to FHIR R5 element `Contributor.contact` as `Equivalent`.
requirements:
  v: Element `Contributor.contact` is mapped to FHIR R5 element `Contributor.contact` as `Equivalent`.
min:
  v: 0
max:
  v: *
base:
  path:
    v: Extension.extension
  min:
    v: 0
  max:
    v: *

id:
  v: Extension.extension:contact.url
path:
  v: Extension.extension.url
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
fixed: Uri
  v: contact
  l: contact

id:
  v: Extension.extension:contact.value[x]
path:
  v: Extension.extension.value[x]
short:
  v: Contact details of the contributor
definition:
  v: Contact details to assist a user in finding and communicating with the contributor.
min:
  v: 0
max:
  v: 1
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1
type:
  code:
    v: ContactDetail
    l: ContactDetail

id:
  v: Extension.url
path:
  v: Extension.url
min:
  v: 1
max:
  v: 1
base:
  path:
    v: Extension.url
  min:
    v: 1
  max:
    v: 1
fixed: Uri
  v: http://hl7.org/fhir/4.3/StructureDefinition/extension-ElementDefinition.defaultValue
  l: extension-ElementDefinition.defaultValue

id:
  v: Extension.value[x]
path:
  v: Extension.value[x]
min:
  v: 0
max:
  v: 0
base:
  path:
    v: Extension.value[x]
  min:
    v: 0
  max:
    v: 1