GXHCPCS Level II
Notice of liability issued, voluntary under payer policy
- Usage notes
- Append when a voluntary ABN was issued for a service that is statutorily excluded or never covered, purely to notify the patient of financial responsibility.
- Common mistakes
- Confusing GX (voluntary notice, statutorily excluded item) with GA (mandatory notice, medical necessity denial expected) — they apply to different denial reasons.
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 GX mean?
Notice of liability issued, voluntary under payer policy
When do I use modifier GX?
Append when a voluntary ABN was issued for a service that is statutorily excluded or never covered, purely to notify the patient of financial responsibility.
What's a common mistake with modifier GX?
Confusing GX (voluntary notice, statutorily excluded item) with GA (mandatory notice, medical necessity denial expected) — they apply to different denial reasons.
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.