Additional Modifiers for Use With Ambulance Transports

 -GM Multiple patients on one ambulance trip
When more than one patient is transported in an ambulance, the Medicare allowed charge for each beneficiary is a percentage of the allowed charge for a single beneficiary transport. The applicable percentage is based on the total number of patients transported, including both Medicare beneficiaries and non-Medicare patients.
Billing Tips
• Use the “GM” modifier to identify a multiple transport.
• Submit documentation to specify the particulars of a multiple transport. The documentation must include the total number of patients transported in the vehicle at the same time and the health insurance claim numbers for each Medicare beneficiary.
• Submit the charges applicable to the appropriate service rendered to each beneficiary and the total mileage for the trip.
• Submit all associated Medicare claims for the multiple transports within a reasonable number of days of submitting the first claim.
• If there is only one Medicare beneficiary in the multiple patient transports, the supplier must document this.
-QL Patient pronounced dead after ambulance called