{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "Criteria for specifying the entities 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).",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
    "_implicit" : true,
    "valueCode" : "IPPOP"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "_PopulationInclusionObservationType"
  } ],
  "codesystem" : "d73ae040-3e88-581f-8c74-bc9b7419407a",
  "concept_id" : "1cbba327-bb92-55d4-9d82-bfc38ec7a0e3",
  "ancestors" : {
    "IPOP" : 0,
    "_ObservationType" : 2,
    "_PopulationInclusionObservationType" : 1
  },
  "id" : "a6f5b019-ffd6-4dfa-9ee1-bba13da45e81",
  "code" : "IPOP",
  "display" : "initial population",
  "version" : "2018-08-12"
}