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2025 CPT code 35571

Bypass graft, with vein; popliteal-tibial, -peroneal artery or other distal vessels.

Saphenous vein harvesting is included. Report additional codes for other vein harvesting (35500, 35572) or composite grafts (35682, 35683). Modifier 59 may be necessary for distinct bypass procedures at different sites.

Modifiers may be applicable, such as anatomical modifiers (LT, RT) for bilateral procedures or modifier 59 for distinct procedures.

Medical necessity must be established by documenting the severity of the arterial disease, symptoms, failed conservative treatment, and the potential for limb salvage with the bypass.

The surgeon performs the bypass procedure, including harvesting the vein graft, making incisions, dissecting tissue, applying clamps, creating anastomoses, and closing the incisions.

IMPORTANT:For harvesting of upper extremity vein, use 35500. For femoropopliteal vein harvesting, use 35572. For autogenous composite grafts, use 35682 (two segments) or 35683 (three or more segments).

In simple words: This surgery creates a detour for blood flow around a blocked artery in the back of the knee. The surgeon uses a healthy vein from elsewhere in the body to create this new pathway, restoring healthy blood circulation to the lower leg.

This procedure involves creating a bypass from the popliteal artery to the tibial, peroneal, or another distal vessel using a vein graft (often harvested from the patient's own body).The procedure is performed to circumvent a blocked or damaged section of the popliteal artery, restoring blood flow to the lower leg.

Example 1: A patient with critical limb ischemia due to a blocked popliteal artery undergoes a popliteal-tibial bypass using a saphenous vein graft., A patient with a severely narrowed peroneal artery receives a popliteal-peroneal bypass with an autologous vein graft to alleviate rest pain and prevent limb loss., Following trauma to the lower leg, a patient requires a popliteal-distal vessel bypass to restore blood flow to a damaged artery below the knee.

Documentation should include details of the blocked artery, the type of graft used, the location of the bypass, intraoperative findings, and postoperative course.

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