{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Description:Patient exhibits no reaction to the challenge agent.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationValue",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "_AllergyTestValue"
  } ],
  "codesystem" : "e67d8c9c-b493-5a7e-a48f-2e583e5bc47a",
  "concept_id" : "56f76857-5393-514d-9fbb-1f5c37ce9cf1",
  "ancestors" : {
    "A0" : 0,
    "_AllergyTestValue" : 1
  },
  "id" : "8912d6e3-d8bc-4860-a63f-45f110ecbcfc",
  "code" : "A0",
  "display" : "no reaction",
  "version" : "2018-08-12"
}