{
  "package" : "hl7.terminology.r4@6.3.0",
  "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" : "03fa9224-8a9f-57e9-9ff6-6ff06c35d47f",
  "concept_id" : "adfb9215-a80e-5a21-adc9-b6152ed541ca",
  "ancestors" : {
    "unknown" : 0
  },
  "id" : "ff154824-e3a0-4793-ba91-47139bc50db9",
  "code" : "unknown",
  "display" : "Unknown",
  "version" : "1.0.0"
}