{
  "package" : "hl7.terminology.r4@6.3.0",
  "definition" : "Identifies types of observations about the parameters required for acquisition and processing of ECG data.\\r\\n\\r\\n**Examples:** \\r\\n\\r\\n *  item byte order\\r\\n *  sample rate\\r\\n *  displayed sweep rate",
  "system" : "http://terminology.hl7.org/CodeSystem/conceptdomains",
  "property" : [ {
    "code" : "source",
    "valueCode" : "v3"
  }, {
    "code" : "ConceptualSpaceForClassCode",
    "valueCoding" : {
      "code" : "OBS",
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ActClass"
    }
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "ObservationType"
  } ],
  "codesystem" : "33eb862a-4e29-55df-b067-9b9d45b786af",
  "concept_id" : "f9b7b2ac-d26a-51c5-a7b8-428d74e4b67d",
  "ancestors" : {
    "ActCode" : 2,
    "ObservationType" : 1,
    "ECGControlVariable" : 0
  },
  "id" : "44b34f87-fa5a-43bb-be17-b3d52e1db5ae",
  "code" : "ECGControlVariable",
  "display" : "ECGControlVariable",
  "version" : "3.0.0"
}