Billing code 35666: Leg bypassMedicare rate & RVUs in Oklahoma
Reports a lower-extremity bypass using a nonvein graft from a femoral artery to an anterior tibial, posterior tibial, or peroneal artery.
CMS doesn’t publish an office rate for 35666 in Oklahoma.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 35666 covers
A vascular surgeon creates a bypass from a femoral artery to an anterior tibial, posterior tibial, or peroneal artery using a graft other than vein. This distal revascularization is used to route blood around obstructive disease in the leg, commonly in limb-salvage surgery for severe peripheral arterial disease. The operation is generally performed in a hospital operating room; the operative report identifies the bypass origin, distal target, and graft material.
Choose this code when the documented inflow is femoral, the outflow is one of the specified tibial or peroneal arteries, and the conduit is not vein. The code has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to a 50% reduction. Bilateral reporting with modifier 50 is paid at 150%. An assistant at surgery may be paid; co-surgeons are paid only with 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.
35666 in Oklahoma
| Payment locality | Office | Facility |
|---|---|---|
| Oklahoma | Unavailable | $1,102.38 |
How the 35666 rate is calculated
Each of 35666’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.
How the rate is built · 35666
RVUs × geographic indexes × conversion factor
Work23.07
23.07 RVUs× 1.000 GPCI
Practice expense6.00
6.00 RVUs× 1.000 GPCI
Malpractice5.89
5.89 RVUs× 1.000 GPCI
Adjusted RVUs
34.9600
Conversion factor
$33.4009
Medicare rate
$1,167.70
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 35666
35666 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 35666
Leg bypass
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.09/0.84/0.07 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 35666
Leg bypass
90-day global period ends
Dec 30, 2026
Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).
Visit on Oct 31, 2026
Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
35666 without 50 · national facility
$1,167.70
Leg bypass
35666-50 · Bilateral: 150%
$1,751.55
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
35666 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 35566Leg bypass
- The bypass origin and distal targets are the same, but 35566 is for a vein graft; 35666 is for a graft other than vein.
- 35671Leg bypass
- Both codes describe bypasses to tibial or peroneal targets using a nonvein graft. Choose 35666 for femoral inflow and 35671 for popliteal inflow.
- 35656Arterial bypass
- This code describes a nonvein bypass from the femoral artery to the popliteal artery, rather than to one of the more distal targets covered by 35666.
35666 billing questions
When should 35666 be chosen instead of 35566?
Use 35666 for the specified femoral-to-tibial or peroneal bypass when the graft is other than vein. Use 35566 for the same route when a vein graft is used.
Which details should the operative report support?
Document the femoral inflow artery, the anterior tibial, posterior tibial, or peroneal outflow target, and the graft material. These details distinguish 35666 from bypass codes with another origin, destination, or conduit.
How is bilateral surgery reported?
For bilateral procedures, report modifier 50; CMS pays the procedure at 150%.
How does the multiple-procedure reduction affect 35666?
When other procedures are performed in the same session, the highest-valued procedure is paid in full and the other procedures are paid at 50%.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeons are paid only when supporting documentation is provided; team surgery is not permitted.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
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
Show the CMS file lines behind this rate
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