GAHCPCS Level II
Waiver of liability statement issued as required by payer policy, individual
- Usage notes
- Append when an Advance Beneficiary Notice (ABN) was issued for a service expected to be denied as not medically necessary, and the notice is on file.
- Common mistakes
- Appending GA without actually having a signed ABN on file — if the payer or an audit requests it, an unsupported GA claim can be treated as billing without proper notice.
Related modifiers
G0Telehealth services for diagnosis, evaluation, or treatment, of symptoms of anG1Most recent urr reading of less than 60G2Most recent urr reading of 60 to 64.9G3Most recent urr reading of 65 to 69.9G4Most recent urr reading of 70 to 74.9G5Most recent urr reading of 75 or greaterG6Esrd patient for whom less than six dialysis sessions have been provided in aG7Pregnancy resulted from rape or incest or pregnancy certified by physician as
Frequently asked questions
What does modifier GA mean?
Waiver of liability statement issued as required by payer policy, individual
When do I use modifier GA?
Append when an Advance Beneficiary Notice (ABN) was issued for a service expected to be denied as not medically necessary, and the notice is on file.
What's a common mistake with modifier GA?
Appending GA without actually having a signed ABN on file — if the payer or an audit requests it, an unsupported GA claim can be treated as billing without proper notice.
HCPCS modifier data from CMS. CPT® is a registered trademark of the American Medical Association — CPT modifier descriptions are not included on this site. Always verify codes with authoritative sources before making billing decisions.