{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "chromosome 21.",
  "system" : "http://terminology.hl7.org/CodeSystem/chromosome-human",
  "property" : [ ],
  "codesystem" : "2773da01-c39f-553f-a0ab-da3045b7a171",
  "concept_id" : "0392abb9-020a-58cb-90be-6ce78c105ab3",
  "ancestors" : {
    "21" : 0
  },
  "id" : "145b1084-9e34-436f-8d03-20da1ef587ce",
  "code" : "21",
  "display" : "chromosome 21",
  "version" : "4.0.1"
}