This is the ValueSet that contains all the codes in RTPBC Event Type Value Set (http://hl7.org/fhir/us/carin-rtpbc/ValueSet/rtpbc-event-type) and RTPBC Event Type Value Set (http://hl7.org/fhir/us/carin-rtpbc/ValueSet/rtpbc-event-type). E.g. what you have to deal with if you get resources containing codes in either of them