2025 CPT code 93571

Intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement during coronary angiography, including pharmacologically induced stress; initial vessel.

This is an add-on code and should always be reported with a primary coronary angiography code. Refer to the AMA CPT manual for complete guidelines and billing instructions.

Modifiers may be applicable depending on the circumstances of the service and payer requirements. For instance, modifier 26 (professional component) may be used in some cases. Consult your payer’s guidelines for the appropriate modifier use.

The medical necessity for this procedure is established when there is a clinical indication to determine the functional significance of a coronary artery stenosis. This is particularly helpful in guiding treatment decisions, such as determining whether revascularization is necessary.

The cardiologist or interventional cardiologist performs this procedure.They are responsible for catheter insertion, medication administration, Doppler ultrasound application, data acquisition, and interpretation of results.

IMPORTANT This code is used in conjunction with various coronary angiography and intervention codes (92920, 92924, 92928, 92933, 92937, 92941, 92943, 92975, 93454-93461, 93563, 93564, 93593-93597). It should not be reported with 0523T.

In simple words: This test measures blood flow in a heart artery using sound waves (ultrasound) before and after giving medicine to increase blood flow. It helps determine the extent of any blockage in the artery.

This CPT code 93571 represents an add-on code for intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement (coronary vessel or graft) during coronary angiography.The measurement includes pharmacologically induced stress and is performed on an initial vessel. This procedure is reported in addition to the primary procedure code for the coronary angiography.

Example 1: A patient presents with chest pain and suspected coronary artery disease. Coronary angiography is performed, and during the procedure, a fractional flow reserve (FFR) measurement is done using intravascular Doppler to assess the severity of a stenosis in the left anterior descending artery.Code 93571 is reported in addition to the coronary angiography code., A patient has undergone coronary artery bypass grafting (CABG).A follow-up coronary angiography with FFR measurement using intravascular Doppler is performed to evaluate the patency of the bypass grafts. Code 93571 is reported in addition to the angiography codes., During a diagnostic coronary angiogram, the physician identifies a significant stenosis in the right coronary artery and determines that an FFR measurement is necessary to guide treatment decisions.A hyperemic FFR measurement is performed via intravascular Doppler technology, and code 93571 is appended to the appropriate coronary angiography code.

* Detailed history and physical examination findings.* Indication for the coronary flow reserve measurement (e.g., evaluation of stenosis severity, assessment of myocardial ischemia).* Coronary angiography images (before and after medication administration).* Doppler ultrasound readings/measurements (pre- and post-hyperemia).* Report including interpretation of the results and clinical correlations.

** 93571 is considered a separately payable add-on code but it should be carefully evaluated for potential bundling or unbundling depending on payer policies.Always review your payer's specific guidelines for appropriate billing.

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