Billing code 35583: Vein bypassMedicare rate & RVUs

Medicare pays $1,301.97 for 35583 nationally in a facility.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 35583 covers

A vascular surgeon uses this procedure to bypass an obstructed or severely diseased artery in the leg, routing blood from the femoral artery to the popliteal artery through the patient’s vein left in its native position. The great saphenous vein is a typical conduit. The surgeon prepares the vein for arterial flow, including disrupting its valves and addressing side branches, and connects it to the arterial inflow and popliteal outflow. These bypasses are generally performed in a hospital operating room for limb ischemia or other significant lower-extremity arterial insufficiency.

Select this code when the operative report documents an in-situ vein conduit and a popliteal target; a bypass using a harvested, repositioned vein or a different conduit follows a different code pathway. Documentation should identify the conduit, bypass endpoints, and in-situ technique. CMS assigns a 90-day global period, including the day-before preoperative visit and related postoperative care for 90 days. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and other procedures at 50%. Modifier 50 payment for a bilateral procedure is 150%. An assistant at surgery may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 35583 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

35583 rates by state

Office rate range in each state. Select a state to see its payment localities.

How the 35583 rate is calculated

Each of 35583’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 35583

35583 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

35583 compared with similar codes

How to choose

35556Arterial bypass

Both address a femoral-to-popliteal vein bypass, but this code identifies an in-situ conduit. Choose 35556 when the documented bypass technique is not in situ.

35585Vein bypass

Both describe in-situ vein bypasses, but 35585 has tibial or peroneal outflow rather than a popliteal target.

35656Arterial bypass

This code describes an in-situ vein bypass; 35656 is the femoral-popliteal bypass pathway for a conduit other than vein.

Codes related to 35583

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates