This is the ValueSet that contains all the codes in RESP-NET Report Context Codes (http://hl7.org/fhir/us/resp-net/ValueSet/respnet-report-context-codes) and RESP-NET Report Context Codes (http://hl7.org/fhir/us/resp-net/ValueSet/respnet-report-context-codes). E.g. what you have to deal with if you get resources containing codes in either of them