{
  "package" : "hl7.terminology.r5@6.3.0",
  "definition" : "The time post drug dose at which the lowest drug level is reached (varies with drug)",
  "system" : "http://terminology.hl7.org/CodeSystem/v2-0256",
  "property" : [ {
    "_uri" : "http://terminology.hl7.org/CodeSystem/utg-concept-properties#status",
    "code" : "status",
    "valueCode" : "A"
  } ],
  "codesystem" : "673e4a8d-c04c-5951-ba5e-f6950a08b3e1",
  "concept_id" : "63d3b620-bac9-5858-97a6-8205466da7d2",
  "ancestors" : {
    "TROUGH" : 0
  },
  "id" : "f04808e6-31d5-4273-ae13-e3f95122b6fe",
  "code" : "TROUGH",
  "display" : "The time post drug dose at which the lowest drug level is reached (varies with drug)",
  "version" : "2.0.0"
}