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 9e51d01c-2171-44b3-bbfd-16a67ff06a3d-48
This code system http://hl7.org/fhir/comparison/CodeSystem/9e51d01c-2171-44b3-bbfd-16a67ff06a3d-48 defines codes, but no codes are represented here