PI is a valid 2023 HCPCS Modifier that could be used to indicate Positron emission tomography (pet) or pet/computed tomography (ct) to inform the initial treatment strategy of tumors that are biopsy proven or strongly suspected of being cancerous based on other diagnostic testing.
PI Modifier has been in effect since Jul 01, 2009.
Short description for PI HCPCS Modifier code:
Pet tumor init tx strat