Chiropractic Services

Therapy services provided by a chiropractor, although non-covered, must be submitted according to therapy guidelines. Therefore, please be sure to include one of the therapy modifiers defined below. Therapy services submitted without the appropriate therapy modifier, including services submitted with HCPCS modifier GY, will be rejected as unprocessable.

• HCPCS modifier GN — Services delivered under an outpatient speech-language pathology plan of care
• HCPCS modifier GO — Services delivered under an outpatient occupational therapy plan of care
• HCPCS modifier GP — Services delivered under an outpatient physical therapy plan of care

A list of codes that require therapy modifiers is available on the CMS website.

Last Reviewed: 07/20/2026

While not mandated, the Advance Beneficiary Notice (ABN) may be provided to Medicare patients as a courtesy to inform them of their financial responsibility for services that are statutorily excluded from Medicare benefits. Medicare, by law, cannot pay for statutorily excluded services. This includes any service provided by a chiropractor other than manual manipulation (e.g., evaluation and management (E/M) services, physical therapy, nutritional supplements and counseling).

Resource: ABNs and Financial Liability — Pub. 100-04, Medicare Claims Processing Manual, Chapter 30, Section 50.3.2 (PDF)

Last Reviewed: 07/20/2026