This is the ValueSet that contains all the codes in Exclude Piroxicam Medications Value Set (http://hl7.org/fhir/uv/pddi/ValueSet/valueset-piroxicam-exclude) and Exclude Piroxicam Medications Value Set (http://hl7.org/fhir/uv/pddi/ValueSet/valueset-piroxicam-exclude). E.g. what you have to deal with if you get resources containing codes in either of them