{
  "package" : "hl7.terminology@6.3.0",
  "definition" : "**Definition:**A list of medications which the patient will consume intermittently based on the behavior of the condition for which the medication is indicated.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-ActCode",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#status",
    "code" : "status",
    "valueCode" : "active"
  }, {
    "_uri" : "http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id",
    "code" : "internalId",
    "valueCode" : "21758"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "subsumedBy",
    "valueCode" : "_ActMedicationTherapyDurationWorkingListCode"
  } ],
  "codesystem" : "638964c5-6f49-5686-925e-fad50ec626e9",
  "concept_id" : "171f39d0-1350-54a8-9ccb-8597ad020b1e",
  "ancestors" : {
    "PRN" : 0,
    "_ActListCode" : 3,
    "_ActTherapyDurationWorkingListCode" : 2,
    "_ActMedicationTherapyDurationWorkingListCode" : 1
  },
  "id" : "0a22e77d-4086-4cde-aca0-6daec80851d8",
  "code" : "PRN",
  "display" : "as needed",
  "version" : "9.0.0"
}