HCPCS 93970

Duplex scan of extremity veins including responses to compression and other maneuvers; complete bilateral study

AI EXPLANATION: A venous duplex ultrasound is a noninvasive imaging test that uses high-frequency sound waves to evaluate blood circulation through the veins in both arms or both legs. During the exam, a specialist gently moves a smooth handheld wand over the skin and applies slight pressure to observe how the blood vessels compress and how blood flows, helping to identify blockages, narrowing, or blood clots.