This is the ValueSet that contains codes in both Procedure Modifier Codes - AMA CPT - CMS HCPCS Value Set (http://hl7.org/fhir/us/carin-bb/ValueSet/AMACPTCMSHCPCSModifiers) and Procedure Modifier Codes - AMA CPT - CMS HCPCS Value Set (http://hl7.org/fhir/us/carin-bb/ValueSet/AMACPTCMSHCPCSModifiers).