CPT® Code 93572

Add-On Code

Intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement (coronary vessel or graft) during coronary angiography including pharmacologically induced stress; each additional vessel (List separately in addition to code for primary procedure)

The CPT® Code 93572 refers to the measurement of intravascular Doppler velocity and/or pressure derived coronary flow reserve during a coronary angiography procedure. This procedure is specifically designed to assess the functionality of coronary vessels or grafts by evaluating blood flow dynamics. A miniaturized Doppler or pressure transducer is utilized, which is mounted on a guidewire and advanced through an existing catheter to a location just distal to the coronary vessel or graft under examination. Initially, baseline measurements of blood flow velocity and/or pressure are recorded. To induce a state of pharmacological stress, a medication is injected directly into the coronary artery, prompting the heart to beat more forcefully and rapidly. This induced hyperemia allows for the collection of additional measurements of blood flow velocity and/or pressure. The comparison of these measurements—baseline versus hyperemic—enables healthcare professionals to calculate the coronary flow reserve, which is critical in determining the severity of any stenosis or lesions present in the coronary artery or graft. It is important to note that this code is applicable for each additional vessel evaluated during the same session, following the initial evaluation of the primary vessel, which is reported using CPT® Code 93571.