{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The value is expected to exist but is not known.",
  "system" : "http://terminology.hl7.org/CodeSystem/data-absent-reason",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "asked-unknown"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "temp-unknown"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "not-asked"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "asked-declined"
  } ],
  "codesystem" : "6d7f40eb-45f3-5013-b284-54abc5dd78b2",
  "concept_id" : "adfb9215-a80e-5a21-adc9-b6152ed541ca",
  "ancestors" : {
    "unknown" : 0
  },
  "id" : "e04552fc-b906-4565-bb99-a00a6a104479",
  "code" : "unknown",
  "display" : "Unknown",
  "version" : "4.0.1"
}