GF is a valid 2023 HCPCS Modifier that could be used to indicate Non-physician (e.g. nurse practitioner (np), certified registered nurse anesthetist (crna), certified registered nurse (crn), clinical nurse specialist (cns), physician assistant (pa)) services in a critical access hospital.
GF Modifier has been in effect since Apr 01, 2003.
Short description for GF HCPCS Modifier code:
Nonphysician serv c a hosp