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Modifier GM

Ambulance arrangement (HCPCS Level II)

Modifier GM. Multiple patients transported on one ambulance trip.

Reference only — CPT descriptors are AMA-copyrighted (paraphrased). Payment percentages and acceptance vary by payer; verify against the current CPT/HCPCS files and payer policy.

Related modifiers

QM
Ambulance service provided under arrangement by a provider of services.
QN
Ambulance service furnished directly by a provider of services.

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