description: This cross-version extension represents Composition.relatesTo from http://hl7.org/fhir/StructureDefinition/Composition|4.3.0 for use in FHIR R5.
package_name: hl7.fhir.uv.xver-r4b.r5
derivation: constraint
name: ext_R4B_Composition_relatesTo
type: Extension
elements:
  extension:
    array: true
    min: 2
    index: 0
    slicing:
      rules: closed
      ordered: false
      discriminator:
      - {path: url, type: value}
      min: 2
      slices:
        code:
          match: {url: null}
          schema:
            isModifier: false
            short: replaces | transforms | signs | appends
            _required: true
            index: 1
            elements:
              value:
                base: {path: 'Extension.value[x]'}
                short: replaces | transforms | signs | appends
                choices: [valueCode]
                index: 3
              valueCode:
                base: {path: 'Extension.value[x]'}
                type: code
                short: replaces | transforms | signs | appends
                choiceOf: value
                index: 4
        target[x]:
          match: {url: null}
          schema:
            isModifier: false
            short: Target of the relationship
            _required: true
            index: 5
            elements:
              value:
                base: {path: 'Extension.value[x]'}
                short: Target of the relationship
                choices: [valueIdentifier, valueReference]
                index: 7
              valueIdentifier:
                base: {path: 'Extension.value[x]'}
                type: Identifier
                short: Target of the relationship
                choiceOf: value
                index: 8
              valueReference:
                short: Target of the relationship
                refers: ['http://hl7.org/fhir/StructureDefinition/Composition']
                type: Reference
                base: {path: 'Extension.value[x]'}
                choiceOf: value
                index: 9
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/4.3/StructureDefinition/extension-Composition.relatesTo'}
    type: uri
    index: 10
package_version: 0.0.1-snapshot-1
extensions:
  code:
    url: null
    isModifier: false
    short: replaces | transforms | signs | appends
    _required: true
    index: 1
    elements:
      value:
        base: {path: 'Extension.value[x]'}
        short: replaces | transforms | signs | appends
        choices: [valueCode]
        index: 3
      valueCode:
        base: {path: 'Extension.value[x]'}
        type: code
        short: replaces | transforms | signs | appends
        choiceOf: value
        index: 4
  target[x]:
    url: null
    isModifier: false
    short: Target of the relationship
    _required: true
    index: 5
    elements:
      value:
        base: {path: 'Extension.value[x]'}
        short: Target of the relationship
        choices: [valueIdentifier, valueReference]
        index: 7
      valueIdentifier:
        base: {path: 'Extension.value[x]'}
        type: Identifier
        short: Target of the relationship
        choiceOf: value
        index: 8
      valueReference:
        short: Target of the relationship
        refers: ['http://hl7.org/fhir/StructureDefinition/Composition']
        type: Reference
        base: {path: 'Extension.value[x]'}
        choiceOf: value
        index: 9
class: extension
kind: complex-type
url: http://hl7.org/fhir/4.3/StructureDefinition/extension-Composition.relatesTo
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 0.0.1-snapshot-1
required: [url]