description: 'R5: `Observation.value[x]` additional types (Attachment, Reference(http://hl7.org/fhir/StructureDefinition/MolecularSequence))'
package_name: hl7.fhir.uv.xver-r5.r4b
derivation: constraint
name: ExtensionObservation_Value
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-Observation.value'}
    index: 0
  value:
    short: Actual result
    choices: [valueAttachment, valueReference]
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    index: 2
  valueAttachment:
    short: Actual result
    type: Attachment
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
  valueReference:
    short: Actual result
    refers: ['http://hl7.org/fhir/5.0/StructureDefinition/profile-MolecularSequence|0.1.0', 'http://hl7.org/fhir/StructureDefinition/MolecularSequence|4.3.0']
    type: Reference
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 4
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/5.0/StructureDefinition/extension-Observation.value
base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0
version: 0.1.0
required: [url]