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 771597bc-b33b-4259-8d70-99e2807bce11-48
This code system http://hl7.org/fhir/comparison/CodeSystem/771597bc-b33b-4259-8d70-99e2807bce11-48 defines codes, but no codes are represented here