description: Provides a reason why the expected value or elements in the element that is extended are    missing.
package_name: bonsai.first.test.r4
derivation: constraint
name: Data Absent Reason
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/data-absent-reason'}
    type: uri
    index: 1
  value:
    choices: [valueCode]
    index: 3
  valueCode: {type: code, choiceOf: value, index: 4}
package_version: 0.1.3
extensions: {}
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: [value, valueCode]