Union of http://terminology.hl7.org/ValueSet/v3-UPC and http://terminology.hl7.org/ValueSet/v3-UPC
This is the ValueSet that contains all the codes in UPC (http://terminology.hl7.org/ValueSet/v3-UPC) and UPC (http://terminology.hl7.org/ValueSet/v3-UPC). E.g. what you have to deal with if you get resources containing codes in either of them