HCPCS Modifier GH

Published 07/16/2020

HCPCS modifier GH is used to report a diagnostic mammogram converted from screening mammogram on the same day.

Guidelines and Instructions
This modifier may be submitted with CPT codes: 77065 and 77066, and HCPCS codes G0204 and G0206. HCPCS codes G0204 and G0206 are no longer valid for dates of service January 1, 2018 and after.

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