This is the CodeSystem that contains codes in both AdverseEventSeriousness (http://terminology.hl7.org/CodeSystem/adverse-event-seriousness) and AdverseEventSeriousness (http://terminology.hl7.org/CodeSystem/adverse-event-seriousness).
Generated Narrative: CodeSystem d53e329c-e887-45ef-9643-5105cec80626-48
This code system http://hl7.org/fhir/comparison/CodeSystem/d53e329c-e887-45ef-9643-5105cec80626-48 defines codes, but no codes are represented here