R4-MessageDefinition-element-map-to-R4B
type: ConceptMap
node role: treeRoot
id:
  v: R4-MessageDefinition-element-map-to-R4B
text:
  status:
    v: generated
  div:
    v: Generated Narrative: ConceptMap R4-MessageDefinition-element-map-to-R4B Mapping from http://hl7.org/fhir/4.0 to http://hl7.org/fhir/4.3 Group 1 Mapping from http://hl7.org/fhir/StructureDefinition/MessageDefinition|4.0.1 to MessageDefinitionversion: 4.3.0) Source Code Relationship Target Code Comment MessageDefinition.meta (meta) is equivalent to MessageDefinition.meta Element `MessageDefinition.meta` is mapped to FHIR R4B element `MessageDefinition.meta` as `Equivalent`. MessageDefinition.implicitRules (implicitRules) is equivalent to MessageDefinition.implicitRules Element `MessageDefinition.implicitRules` is mapped to FHIR R4B element `MessageDefinition.implicitRules` as `Equivalent`. 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. MessageDefinition.language (language) is equivalent to MessageDefinition.language Element `MessageDefinition.language` is mapped to FHIR R4B element `MessageDefinition.language` as `Equivalent`. 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…
extension:
  url:
    v: http://hl7.org/fhir/StructureDefinition/structuredefinition-wg
    l: structuredefinition-wg
  value: Code
    v: fhir
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-r4.r4b
        l: hl7.fhir.uv.xver-r4.r4b
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-r4.r4b
        l: hl7.fhir.uv.xver-r4.r4b
url:
  v: http://hl7.org/fhir/uv/xver/ConceptMap/R4-MessageDefinition-element-map-to-R4B
  l: R4-MessageDefinition-element-map-to-R4B
version:
  v: 0.1.0
name:
  v: R4MessageDefinitionElementMapToR4B
title:
  v: Cross-version mapping for FHIR R4 MessageDefinition to FHIR R4B MessageDefinition
status:
  v: active
experimental:
  v: false
date:
  v: 2026-03-17T16:03:43.0753142-05:00
contact:
  name:
    v: FHIR Infrastructure
  telecom:
    system:
      v: url
    value:
      v: http://www.hl7.org/Special/committees/fiwg
description:
  v: This ConceptMap represents cross-version mappings for elements from a FHIR R4 MessageDefinition to FHIR R4B.
jurisdiction:
  coding:
    system:
      v: http://unstats.un.org/unsd/methods/m49/m49.htm
      l: m49.htm
    code:
      v: 001
    display:
      v: World
source: Canonical
  v: http://hl7.org/fhir/4.0
  l: http://hl7.org/fhir/4.0
target: Uri
  v: http://hl7.org/fhir/4.3
  l: http://hl7.org/fhir/4.3
group:
  source:
    v: http://hl7.org/fhir/StructureDefinition/MessageDefinition
    l: MessageDefinition
  source version:
    v: 4.0.1
  target:
    v: http://hl7.org/fhir/StructureDefinition/MessageDefinition
    l: MessageDefinition
  target version:
    v: 4.3.0
  element:
    code:
      v: MessageDefinition.meta
    display:
      v: meta
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.meta
      display:
        v: MessageDefinition.meta
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.meta` is mapped to FHIR R4B element `MessageDefinition.meta` as `Equivalent`.
  element:
    code:
      v: MessageDefinition.implicitRules
    display:
      v: implicitRules
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.implicitRules
      display:
        v: MessageDefinition.implicitRules
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.implicitRules` is mapped to FHIR R4B element `MessageDefinition.implicitRules` as `Equivalent`. 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.
  element:
    code:
      v: MessageDefinition.language
    display:
      v: language
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.language
      display:
        v: MessageDefinition.language
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.language` is mapped to FHIR R4B element `MessageDefinition.language` as `Equivalent`. 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).
  element:
    code:
      v: MessageDefinition.text
    display:
      v: text
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.text
      display:
        v: MessageDefinition.text
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.text` is mapped to FHIR R4B element `MessageDefinition.text` as `Equivalent`. 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.
  element:
    code:
      v: MessageDefinition.contained
    display:
      v: contained
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.contained
      display:
        v: MessageDefinition.contained
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.contained` is mapped to FHIR R4B element `MessageDefinition.contained` as `Equivalent`. 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.
  element:
    code:
      v: MessageDefinition.url
    display:
      v: url
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.url
      display:
        v: MessageDefinition.url
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.url` is mapped to FHIR R4B element `MessageDefinition.url` as `Equivalent`. 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](https://hl7.org/fhir/resource..html#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](https://hl7.org/fhir/resou.html#meta) element to indicate where the current master source of the resource can be found.
  element:
    code:
      v: MessageDefinition.identifier
    display:
      v: identifier
    target:
      modifier extension:
        value: Code
      code:
        v: MessageDefinition.identifier
      display:
        v: MessageDefinition.identifier
      equivalence:
        v: equivalent
      comment:
        v: Element `MessageDefinition.identifier` is mapped to FHIR R4B element `MessageDefinition.identifier` as `Equivalent`. Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this message definition outside of FHIR, where it is not possible to use the logical URI.

Code
v: equivalent

Code
v: equivalent

Code
v: equivalent

Code
v: equivalent

Code
v: equivalent

Code
v: equivalent

Code
v: equivalent

code:
  v: MessageDefinition.version
display:
  v: version
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.version
  display:
    v: MessageDefinition.version
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.version` is mapped to FHIR R4B element `MessageDefinition.version` as `Equivalent`. There may be different message definition 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 message definition with the format [url]|[version].

code:
  v: MessageDefinition.name
display:
  v: name
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.name
  display:
    v: MessageDefinition.name
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.name` is mapped to FHIR R4B element `MessageDefinition.name` as `Equivalent`. 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.

code:
  v: MessageDefinition.title
display:
  v: title
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.title
  display:
    v: MessageDefinition.title
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.title` is mapped to FHIR R4B element `MessageDefinition.title` as `Equivalent`. This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.

code:
  v: MessageDefinition.replaces
display:
  v: replaces
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.replaces
  display:
    v: MessageDefinition.replaces
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.replaces` is mapped to FHIR R4B element `MessageDefinition.replaces` as `Equivalent`.

code:
  v: MessageDefinition.status
display:
  v: status
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.status
  display:
    v: MessageDefinition.status
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.status` is mapped to FHIR R4B element `MessageDefinition.status` as `Equivalent`. Allows filtering of message definitions that are appropriate for use versus not.

code:
  v: MessageDefinition.experimental
display:
  v: experimental
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.experimental
  display:
    v: MessageDefinition.experimental
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.experimental` is mapped to FHIR R4B element `MessageDefinition.experimental` as `Equivalent`. Allows filtering of message definitions that are appropriate for use versus not.

code:
  v: MessageDefinition.date
display:
  v: date
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.date
  display:
    v: MessageDefinition.date
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.date` is mapped to FHIR R4B element `MessageDefinition.date` as `Equivalent`. Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the message definition. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

code:
  v: MessageDefinition.publisher
display:
  v: publisher
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.publisher
  display:
    v: MessageDefinition.publisher
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.publisher` is mapped to FHIR R4B element `MessageDefinition.publisher` as `Equivalent`. Usually an organization but may be an individual. The publisher (or steward) of the message definition is the organization or individual primarily responsible for the maintenance and upkeep of the message definition. 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 message definition. This item SHOULD be populated unless the information is available from context.

code:
  v: MessageDefinition.contact
display:
  v: contact
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.contact
  display:
    v: MessageDefinition.contact
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.contact` is mapped to FHIR R4B element `MessageDefinition.contact` as `Equivalent`. May be a web site, an email address, a telephone number, etc.

code:
  v: MessageDefinition.description
display:
  v: description
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.description
  display:
    v: MessageDefinition.description
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.description` is mapped to FHIR R4B element `MessageDefinition.description` as `Equivalent`. This description can be used to capture details such as why the message definition 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 message definition 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 message definition is presumed to be the predominant language in the place the message definition was created).

code:
  v: MessageDefinition.useContext
display:
  v: useContext
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.useContext
  display:
    v: MessageDefinition.useContext
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.useContext` is mapped to FHIR R4B element `MessageDefinition.useContext` as `Equivalent`. When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.

code:
  v: MessageDefinition.jurisdiction
display:
  v: jurisdiction
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.jurisdiction
  display:
    v: MessageDefinition.jurisdiction
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.jurisdiction` is mapped to FHIR R4B element `MessageDefinition.jurisdiction` as `Equivalent`. It may be possible for the message definition to be used in jurisdictions other than those for which it was originally designed or intended.

code:
  v: MessageDefinition.purpose
display:
  v: purpose
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.purpose
  display:
    v: MessageDefinition.purpose
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.purpose` is mapped to FHIR R4B element `MessageDefinition.purpose` as `Equivalent`. This element does not describe the usage of the message definition. 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 message definition.

code:
  v: MessageDefinition.copyright
display:
  v: copyright
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.copyright
  display:
    v: MessageDefinition.copyright
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.copyright` is mapped to FHIR R4B element `MessageDefinition.copyright` as `Equivalent`.

code:
  v: MessageDefinition.base
display:
  v: base
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.base
  display:
    v: MessageDefinition.base
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.base` is mapped to FHIR R4B element `MessageDefinition.base` as `Equivalent`.

code:
  v: MessageDefinition.parent
display:
  v: parent
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.parent
  display:
    v: MessageDefinition.parent
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.parent` is mapped to FHIR R4B element `MessageDefinition.parent` as `Equivalent`. It should be possible to use MessageDefinition to describe a message to be used by certain steps in a particular protocol as part of a PlanDefinition or ActivityDefinition.

code:
  v: MessageDefinition.event[x]
display:
  v: event[x]
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.event[x]
  display:
    v: MessageDefinition.event[x]
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.event[x]` is mapped to FHIR R4B element `MessageDefinition.event[x]` as `Equivalent`. The target context `MessageDefinition.event[x]` is a choice-type element and cannot directly hold extensions. The context is moved up to parent element `MessageDefinition`.

code:
  v: MessageDefinition.category
display:
  v: category
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.category
  display:
    v: MessageDefinition.category
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.category` is mapped to FHIR R4B element `MessageDefinition.category` as `Equivalent`.

code:
  v: MessageDefinition.focus
display:
  v: focus
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: wider
  code:
    v: MessageDefinition.focus
  display:
    v: MessageDefinition.focus
  equivalence:
    v: wider
  comment:
    v: Element `MessageDefinition.focus` is mapped to FHIR R4B element `MessageDefinition.focus` as `Equivalent`.

code:
  v: MessageDefinition.focus.code
display:
  v: code
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: wider
  code:
    v: MessageDefinition.focus.code
  display:
    v: MessageDefinition.focus.code
  equivalence:
    v: wider
  comment:
    v: Element `MessageDefinition.focus.code` is mapped to FHIR R4B element `MessageDefinition.focus.code` as `SourceIsBroaderThanTarget`. Multiple focuses addressing different resources may occasionally occur. E.g. to link or unlink a resource from a particular account or encounter, etc.

code:
  v: MessageDefinition.focus.profile
display:
  v: profile
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.focus.profile
  display:
    v: MessageDefinition.focus.profile
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.focus.profile` is mapped to FHIR R4B element `MessageDefinition.focus.profile` as `Equivalent`. This should be present for most message definitions. However, if the message focus is only a single resource and there is no need to include referenced resources or otherwise enforce the presence of particular elements, it can be omitted.

code:
  v: MessageDefinition.focus.min
display:
  v: min
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.focus.min
  display:
    v: MessageDefinition.focus.min
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.focus.min` is mapped to FHIR R4B element `MessageDefinition.focus.min` as `Equivalent`.

code:
  v: MessageDefinition.focus.max
display:
  v: max
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.focus.max
  display:
    v: MessageDefinition.focus.max
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.focus.max` is mapped to FHIR R4B element `MessageDefinition.focus.max` as `Equivalent`.

code:
  v: MessageDefinition.responseRequired
display:
  v: responseRequired
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.responseRequired
  display:
    v: MessageDefinition.responseRequired
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.responseRequired` is mapped to FHIR R4B element `MessageDefinition.responseRequired` as `Equivalent`. This enables the capability currently available through MSH-16 (Application Level acknowledgement) in HL7 Version 2 to declare at a message instance level whether a response is required or only upon error or success, or never.

code:
  v: MessageDefinition.allowedResponse
display:
  v: allowedResponse
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: wider
  code:
    v: MessageDefinition.allowedResponse
  display:
    v: MessageDefinition.allowedResponse
  equivalence:
    v: wider
  comment:
v: Element `MessageDefinition.allowedResponse` is mapped to FHIR R4B element `MessageDefinition.allowedResponse` as `Equivalent`. This indicates an application level response to "close" a transaction implicit in a particular request message. To define a complete workflow scenario, look to the PlanDefinition resource which allows the definition of complex orchestrations, conditionality, etc.

code:
  v: MessageDefinition.allowedResponse.message
display:
  v: message
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.allowedResponse.message
  display:
    v: MessageDefinition.allowedResponse.message
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.allowedResponse.message` is mapped to FHIR R4B element `MessageDefinition.allowedResponse.message` as `Equivalent`.

code:
  v: MessageDefinition.allowedResponse.situation
display:
  v: situation
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.allowedResponse.situation
  display:
    v: MessageDefinition.allowedResponse.situation
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.allowedResponse.situation` is mapped to FHIR R4B element `MessageDefinition.allowedResponse.situation` as `Equivalent`.

code:
  v: MessageDefinition.graph
display:
  v: graph
target:
  modifier extension:
    url:
      v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
      l: extension-ConceptMap.element.target.equivalence
    value: Code
      v: equivalent
  code:
    v: MessageDefinition.graph
  display:
    v: MessageDefinition.graph
  equivalence:
    v: equivalent
  comment:
    v: Element `MessageDefinition.graph` is mapped to FHIR R4B element `MessageDefinition.graph` as `Equivalent`.

source:
  v: http://hl7.org/fhir/StructureDefinition/MessageDefinition
  l: MessageDefinition
source version:
  v: 4.0.1
target:
  v: http://hl7.org/fhir/4.0/StructureDefinition/extension-MessageDefinition.focus.code
  l: extension-MessageDefinition.focus.code
target version:
  v: 0.1.0
element:
  code:
    v: MessageDefinition.focus.code
  display:
    v: code
  target:
    modifier extension:
      url:
        v: http://hl7.org/fhir/1.0/StructureDefinition/extension-ConceptMap.element.target.equivalence
        l: extension-ConceptMap.element.target.equivalence
      value: Code
        v: equivalent
    code:
      v: Extension
    equivalence:
      v: equivalent
    comment:
      v: Element `MessageDefinition.focus.code` is mapped to FHIR R4B element `MessageDefinition.focus.code` as `SourceIsBroaderThanTarget`. Multiple focuses addressing different resources may occasionally occur. E.g. to link or unlink a resource from a particular account or encounter, etc.