{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The first immunization administration in a series intended to produce immunity",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
  "property" : [ {
    "code" : "status",
    "valueCode" : "retired"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "IMMUNIZ"
  } ],
  "codesystem" : "d73ae040-3e88-581f-8c74-bc9b7419407a",
  "concept_id" : "18692ce9-fb27-5556-a31b-041be0fea053",
  "ancestors" : {
    "IMMUNIZ" : 1,
    "INITIMMUNIZ" : 0,
    "_ActSubstanceAdministrationCode" : 2
  },
  "id" : "2dee6369-d811-4f1d-9ad4-feefdefd7bb7",
  "code" : "INITIMMUNIZ",
  "display" : "Initial Immunization",
  "version" : "2018-08-12"
}