{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The source was asked but does not know the value.",
  "system" : "http://terminology.hl7.org/CodeSystem/data-absent-reason",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "unknown"
  } ],
  "codesystem" : "493d3e0e-2104-5c1b-b3ee-f6c2b4e4d021",
  "concept_id" : "b1dadced-64b3-5725-a1dd-cbb4232297a1",
  "ancestors" : {
    "unknown" : 1,
    "asked-unknown" : 0
  },
  "id" : "b3e0c90d-737f-46a8-9405-58a7e3adc9e9",
  "code" : "asked-unknown",
  "display" : "Asked But Unknown",
  "version" : "4.0.1"
}