Phlebitis and thrombophlebitis of peroneal vein, bilateral

This code signifies inflammation of the peroneal vein, accompanied by the formation of a blood clot (thrombosis), affecting both the left and right legs. This condition is a form of deep vein thrombosis (DVT) specifically involving the peroneal veins, which are located in the lower leg.

Apply this code when documentation clearly indicates a diagnosis of phlebitis and thrombophlebitis of the peroneal vein affecting both lower extremities. Supporting documentation should include physician notes detailing the location (peroneal vein) and laterality (bilateral) of the thrombotic event, often confirmed by imaging studies like duplex ultrasound.

• Ensure documentation specifies "bilateral" involvement; otherwise, use a unilateral code.
• Distinguish from superficial thrombophlebitis; this code is for deep veins.
• Code any associated pulmonary embolism separately, if present.