PS is a valid 2023 HCPCS Modifier that could be used to indicate Positron emission tomography (pet) or pet/computed tomography (ct) to inform the subsequent treatment strategy of cancerous tumors when the beneficiary's treating physician determines that the pet study is needed to inform subsequent anti-tumor strategy.

PS Modifier has been in effect since Jul 01, 2009.

Short description for PS HCPCS Modifier code:

Pet tumor subsq tx strategy