This is the ValueSet that contains all the codes in Drug Product Component Function Category Terminology (http://hl7.org/fhir/us/pq-cmc-fda/ValueSet/pqcmc-drug-product-component-function-category-terminology) and Drug Product Component Function Category Terminology (http://hl7.org/fhir/us/pq-cmc-fda/ValueSet/pqcmc-drug-product-component-function-category-terminology). E.g. what you have to deal with if you get resources containing codes in either of them