{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "Indication of drug use.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationValue",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "HLSTAT"
  } ],
  "codesystem" : "ec013d25-2aca-5859-85ca-8417fa535d67",
  "concept_id" : "a93741fa-6011-583a-9187-e23137126af5",
  "ancestors" : {
    "DRUG" : 0,
    "HLSTAT" : 1,
    "_ActCoverageAssessmentObservationValue" : 2
  },
  "id" : "6e6e8eff-928b-4107-9cab-44a7143d8db8",
  "code" : "DRUG",
  "display" : "drug use",
  "version" : "2018-08-12"
}