CPT® Code 93924

Noninvasive physiologic studies of lower extremity arteries, at rest and following treadmill stress testing, (ie, bidirectional Doppler waveform or volume plethysmography recording and analysis at rest with ankle/brachial indices immediately after and at timed intervals following performance of a standardized protocol on a motorized treadmill plus recording of time of onset of claudication or other symptoms, maximal walking time, and time to recovery) complete bilateral study

Noninvasive physiologic studies of the lower extremity arteries are essential diagnostic procedures aimed at evaluating peripheral artery disease (PAD). PAD is characterized by the narrowing or blockage of arteries in the extremities, particularly in the legs, which can lead to symptoms such as intermittent claudication. Intermittent claudication manifests as pain and numbness in the legs, typically triggered by physical activities like walking. The noninvasive nature of these studies allows for the assessment of arterial function without the need for surgical intervention. The procedure involves the use of advanced techniques such as bidirectional Doppler ultrasound and plethysmography to measure blood flow and pressure in the arteries. During the evaluation, tests are conducted both at rest and after a standardized treadmill stress test, which helps to simulate the conditions under which symptoms may occur. The studies include the recording of ankle/brachial indices, which compare blood pressure readings at the ankle to those in the arm, providing critical information about arterial health. The results are analyzed to determine the presence and severity of PAD, with a focus on identifying the onset of claudication symptoms, maximal walking time, and recovery time following exercise. The findings from these studies are crucial for guiding treatment decisions and managing the patient's condition effectively.