This is the CodeSystem that contains all the codes in AHA NUBC Priority (Type) of Admission or Visit (https://www.nubc.org/CodeSystem/PriorityTypeOfAdmitOrVisit) and AHA NUBC Priority (Type) of Admission or Visit (https://www.nubc.org/CodeSystem/PriorityTypeOfAdmitOrVisit). E.g. what you have to deal with if you get resources containing codes in either of them