{
  "package" : "hl7.terminology.r5@6.3.0",
  "definition" : "Clinical judgment that there are no known items for this list after reasonable investigation. Note that this a positive statement by a clinical user, and not a default position asserted by a computer system in the lack of other information. Example uses:  * For allergies: the patient or patient's agent/guardian has asserted that he/she is not aware of any allergies (NKA - nil known allergies)  * For medications: the patient or patient's agent/guardian has asserted that the patient is known to be taking no medications  * For diagnoses, problems and procedures: the patient or patient's agent/guardian has asserted that there is no known event to record.",
  "system" : "http://terminology.hl7.org/CodeSystem/list-empty-reason",
  "property" : [ ],
  "codesystem" : "3b8d1f43-fee7-5b80-84d2-7879b779d2bc",
  "concept_id" : "93282bcd-02c8-5e68-b209-5891aa95327f",
  "ancestors" : {
    "nilknown" : 0
  },
  "id" : "ecb08a82-ebb6-4cf5-a1c1-2badc7749a2a",
  "code" : "nilknown",
  "display" : "Nil Known",
  "version" : "1.0.1"
}