Healthcare claims use standardized code sets so that diagnoses, procedures, services, supplies, and equipment can be communicated consistently. The code sets serve different purposes and have separate instructions, update cycles, and licensing rules.
Three common code-set families
- ICD-10-CM is used to report diagnoses in U.S. healthcare settings.
- CPT, maintained by the American Medical Association, reports many medical procedures and professional services and forms HCPCS Level I.
- HCPCS Level II, maintained by CMS, identifies many products, supplies, equipment, and services not included in CPT.
Use the complete current instructions
A code description alone is not enough for selection. Review the current official guidelines, notes, definitions, modifiers, edits, documentation, coverage policy, and payer instructions. Code updates can have different effective dates, so version control matters.
Primary reference: CMS describes the relationship between CPT and HCPCS Level II on its official HCPCS page. Qualified coding professionals should verify selections against licensed, current resources.
