The modifier declares that the teaching physician personally performed the “critical” portion of the procedure and is thus entitled to bill for it. HCPCS Modifiers GA, GY and GZ. These modifiers are applied to Pap test HCPCS codes when billing Medicare. They clarify the laboratory’s right (...
These modifiers are applied to Pap test HCPCS codes when billing Medicare. They clarify the laboratory's right (or lack thereof) to bill the Medicare beneficiary for the charge if it's denied by the contractor. HCPCS Modifier TC. This modifier denotes the facility technical component of the ...