{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Description: Indicates whether an antigen is valid or invalid.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "_ImmunizationObservationType"
  } ],
  "codesystem" : "6064fe67-dfa9-5c7f-9737-99a0909e44de",
  "concept_id" : "6db39331-4c6a-54b1-b11d-9d2ccb387824",
  "ancestors" : {
    "OBSANTV" : 0,
    "_ObservationType" : 2,
    "_ImmunizationObservationType" : 1
  },
  "id" : "837666aa-dfba-42b3-b64b-2a62c8719d55",
  "code" : "OBSANTV",
  "display" : "antigen validity",
  "version" : "2018-08-12"
}