CPT Knowledgebase - Nov 4, 2022

We have a question about reporting code 93571 (Intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement (coronary vessel or graft) during coronary angiography including pharmacologically induced stress; initial vessel (List separately in addition to code for primary procedure) with a descriptor that includes "pharmacologically induced stress". Per CPT Assistant, December 2015, Volume 25 Issue 12, guidance indicated to report code 93571 with modifier 52 when no pharmacologically induced stress was performed (eg. iFR, DFR). Alternatively the AHA Editorial Advisory Board of Coding Clinic for HCPCS in September 2022 stated when FFR is performed with no pharmacologically induced stress, report code 93799. Which recommendation is the most appropriate way to report code 93571 when the physician did not perform pharmacologically induced stress as part of the procedure?

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