description: Provides a reason why the expected value or elements in the element that is extended are missing.
package_name: pcr.r4.1
derivation: constraint
name: DataAbsentReason
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/data-absent-reason'}
    index: 0
  value:
    choices: [valueCode]
    index: 2
  valueCode: {type: code, choiceOf: value, index: 3}
package_version: 1-0-pkg-1.2.4
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/data-absent-reason
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.0.1
required: [valueCode, value]