{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "A hierarchy where the child concepts have an IS-A relationship with the parents - that is, all the properties of the parent are also true for its child concepts. Not that is-a is a property of the concepts, so additional subsumption relationships may be defined using properties or the [subsumes](extension-codesystem-subsumes.html) extension.",
  "system" : "http://hl7.org/fhir/codesystem-hierarchy-meaning",
  "property" : [ ],
  "codesystem" : "c671e889-55bd-50fb-ad5e-929c81e7981e",
  "concept_id" : "ab3c14fe-f9b6-5150-af76-156a4548ecad",
  "ancestors" : {
    "is-a" : 0
  },
  "id" : "daf86c25-c403-4c4a-a0fc-1277dd69151e",
  "code" : "is-a",
  "display" : "Is-A",
  "version" : "4.0.1"
}