This is the CodeSystem that contains codes in both Healthcare Common Procedure Coding System (HCPCS) level II alphanumeric codes (http://www.cms.gov/Medicare/Coding/HCPCSReleaseCodeSets) and Healthcare Common Procedure Coding System (HCPCS) level II alphanumeric codes (http://www.cms.gov/Medicare/Coding/HCPCSReleaseCodeSets).