This is the ValueSet that contains all the codes in Organization-Site Identifier Terminology (http://hl7.org/fhir/us/pq-cmc-fda/ValueSet/pqcmc-org-identifier-type-terminology) and Organization-Site Identifier Terminology (http://hl7.org/fhir/us/pq-cmc-fda/ValueSet/pqcmc-org-identifier-type-terminology). E.g. what you have to deal with if you get resources containing codes in either of them