CPT® Code 93975

Duplex scan of arterial inflow and venous outflow of abdominal, pelvic, scrotal contents and/or retroperitoneal organs; complete study

A duplex scan of arterial inflow and venous outflow is a comprehensive vascular ultrasound study that evaluates the blood flow dynamics within the abdominal, pelvic, and scrotal regions, as well as the retroperitoneal organs. This procedure employs both B-mode imaging and Doppler ultrasound techniques to provide a detailed assessment of the vascular structures. During the examination, a clear gel is applied to the skin to facilitate the transmission of sound waves. A B-mode transducer is then placed on the skin, generating real-time images of the arteries and veins. The Doppler component of the transducer assesses the flow of blood by detecting the movement of blood cells within the vessels. The interaction of sound waves with these moving cells produces audible signals that vary in pitch, indicating changes in blood flow, such as reductions or complete obstructions. The resulting data is processed by a computer, which creates color-coded images that illustrate the speed and direction of blood flow, as well as any potential blockages. Additionally, spectral Doppler analysis is conducted to evaluate anatomical structures and hemodynamic function, providing insights into conditions like vessel narrowing and plaque buildup. The physician interprets the findings from the duplex scan and documents the results in a written report. For a complete study, the appropriate code to use is 93975, while a limited study is coded as 93976.