GMHCPCS Level II
Multiple patients on one ambulance trip
- Usage notes
- Append to an ambulance service code when multiple patients were transported in the same ambulance trip.
- Common mistakes
- Failing to append GM when transporting multiple patients together, which can lead to each claim being paid as if it were a separate, single-patient trip.
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 GM mean?
Multiple patients on one ambulance trip
When do I use modifier GM?
Append to an ambulance service code when multiple patients were transported in the same ambulance trip.
What's a common mistake with modifier GM?
Failing to append GM when transporting multiple patients together, which can lead to each claim being paid as if it were a separate, single-patient trip.
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.