CPT® Code 93985

Duplex scan of arterial inflow and venous outflow for preoperative vessel assessment prior to creation of hemodialysis access; complete bilateral study

Duplex scan of arterial inflow and venous outflow is a specialized ultrasound technique utilized for the preoperative assessment of blood vessels prior to the creation of hemodialysis access. This procedure is particularly important for patients with kidney failure who require an arteriovenous fistula (AVF) for hemodialysis. The duplex scan combines traditional ultrasound imaging with pulsed wave color flow Doppler imaging, allowing healthcare professionals to visualize both the structure of blood vessels and the dynamics of blood flow within them. By employing this dual imaging technique, clinicians can obtain a comprehensive view of how blood flows through the arteries and veins, as well as assess the integrity of the vessel walls. The procedure is performed by moving a transducer wand over the area of interest, which emits sound waves that penetrate the tissues. These sound waves are reflected back to the computer after interacting with various structures, enabling the generation of detailed images. The Doppler component of the scan specifically captures the movement of blood, providing critical information about the speed and direction of blood flow. This is essential for identifying any abnormalities that may affect the success of the AVF creation. Patients who may benefit from this duplex scan include those who are obese, have undergone multiple previous access surgeries, or have suspected arterial or venous diseases. The results of the duplex scan are crucial for determining the most suitable site for AVF creation, ensuring optimal access for hemodialysis treatment. For a complete bilateral study, the appropriate code to use is 93985, while 93986 should be used for a complete unilateral study.