This is the ValueSet that contains all the codes in Procedure Codes - International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) - ICD-10 Procedure Value Set (http://hl7.org/fhir/us/carin-bb/ValueSet/CMSICD910PCSProcedureCodes) and Procedure Codes - International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) - ICD-10 Procedure Value Set (http://hl7.org/fhir/us/carin-bb/ValueSet/CMSICD910PCSProcedureCodes). E.g. what you have to deal with if you get resources containing codes in either of them