{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Criteria for specifying the patients to be evaluated by a specific quality measure, based on a shared common set of characteristics (within a specific measurement set to which a given measure belongs). Details often include information based upon specific age groups, diagnoses, diagnostic and procedure codes, and enrollment periods.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "IPOP"
  } ],
  "codesystem" : "6064fe67-dfa9-5c7f-9737-99a0909e44de",
  "concept_id" : "ebae48dc-4a6d-51da-a145-c225922277a8",
  "ancestors" : {
    "IPOP" : 1,
    "IPPOP" : 0,
    "_ObservationType" : 3,
    "_PopulationInclusionObservationType" : 2
  },
  "id" : "ebfdb720-e44d-4428-95a2-b8f1e1ed8269",
  "code" : "IPPOP",
  "display" : "initial patient population",
  "version" : "2018-08-12"
}