GF

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating nonphysician (nurse practitioner, certified registered nurse anesthetist, certified registered nurse, clinical nurse specialist, physician assistant) services performed in a critical access hospital.

GG

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating performance and payment of a screening mammogram and diagnostic mammogram on the same patient on the same day.

GH

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating a diagnostic mammogram converted from a screening mammogram on the same day.

GIC

See: guaranteed investment contract (GIC) and separate account guaranteed investment contract (GIC) .

GJ

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating an opt out physician or practitioner who has given emergency or urgent service to a Medicare patient.

GK

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating the actual item or service ordered by a physician. Item may be associated with GA or GZ modifier.