Intersection of http://terminology.hl7.org/CodeSystem/adverse-event-severity and http://terminology.hl7.org/CodeSystem/adverse-event-severity
This is the CodeSystem that contains codes in both AdverseEventSeverity (http://terminology.hl7.org/CodeSystem/adverse-event-severity) and AdverseEventSeverity (http://terminology.hl7.org/CodeSystem/adverse-event-severity).