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