{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "The set of actions that define an experiment to assess the effectiveness and/or safety of a biopharmaceutical product (food, drug, device, etc.).  In definition mood, this set of actions is often embodied in a clinical trial protocol; in event mood, this designates the aggregate act of applying the actions to one or more subjects.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActClass",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "OBS"
  } ],
  "codesystem" : "e17e87cb-d800-524d-8133-b28efac7773e",
  "concept_id" : "5ff42c3b-01fd-56ba-8743-0d8bd61b5d48",
  "ancestors" : {
    "ACT" : 2,
    "OBS" : 1,
    "CLNTRL" : 0
  },
  "id" : "a3d7d38a-973a-47ee-9591-534abf37ed1d",
  "code" : "CLNTRL",
  "display" : "clinical trial",
  "version" : "2018-08-12"
}