{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The introduction of an immunogen with the intent of stimulating an immune response, aimed at preventing subsequent infections by more viable agents.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "INITIMMUNIZ"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "BOOSTER"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "_ActSubstanceAdministrationCode"
  } ],
  "codesystem" : "d73ae040-3e88-581f-8c74-bc9b7419407a",
  "concept_id" : "9c0b92ea-854e-52ac-b27a-e88d9b2ead67",
  "ancestors" : {
    "IMMUNIZ" : 0,
    "_ActSubstanceAdministrationCode" : 1
  },
  "id" : "cefe8d11-95b8-4924-ac32-e126895a3058",
  "code" : "IMMUNIZ",
  "display" : "Immunization",
  "version" : "2018-08-12"
}