Modifier GA

Waiver of Liability statement on file

Use this modifier to report that an Advance Beneficiary Notice of Noncoverage (ABN) was issued for a service and ABN is on file. A copy of the ABN does not have to be submitted but must be made available upon request.

Correct Use

  • Use in situations in which an item or service is expected to be denied as not medically necessary and an ABN has been properly executed
  • Append to either a specific or miscellaneous HCPCS code
  • Append this modifier to ensure that upon denial, Medicare will automatically assign it beneficiary liable

Incorrect Use

  • Do not place any combination of GY, GZ, or GA modifiers on same claim line.
    • If used on same claim line, claim will be denied
  • Cannot be used with KX modifier



Last Updated Sep 27 , 2022