Modifier code
Modifier GA: Waiver of liability statement on file (Medicare ABN)
Provider has obtained ABN — patient responsible if Medicare denies.
Code
GA
When to use
Medicare provider has obtained Advance Beneficiary Notice (ABN) acknowledging patient is responsible if Medicare denies.
Common issues
- Patient may receive bill if Medicare denies
Frequently asked questions
What is modifier GA?
Waiver of liability statement on file (Medicare ABN)
When should it be used?
Medicare provider has obtained Advance Beneficiary Notice (ABN) acknowledging patient is responsible if Medicare denies.
Common issues when modifier is missing or wrong?
Patient may receive bill if Medicare denies.
Other modifiers
- 25 — Significant, separately identifiable E&M service on same day as procedureWhen E&M visit + procedure happen same day and the E&M was separately documented
- 26 — Professional componentSplits a procedure into its professional (physician interpretation) and technica
- 50 — Bilateral procedureProcedure performed on both sides of the body during a single session.
- 51 — Multiple proceduresMultiple procedures performed at the same session.
- 52 — Reduced servicesService partially reduced or eliminated at the physician's discretion.
- 53 — Discontinued procedureProcedure discontinued because of extenuating circumstances.
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