Billing code 35570: Arterial bypassMedicare rate & RVUs in Massachusetts
Reports an autogenous-vein arterial bypass joining a tibial artery to another tibial or peroneal artery for distal lower-extremity revascularization.
CMS doesn’t publish an office rate for 35570 in Massachusetts.
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 35570 covers
This operation uses a vein conduit to bypass obstructive disease between a tibial artery and another tibial artery or the peroneal artery. A vascular surgeon typically performs it in an operating room for severe lower-extremity ischemia when revascularization must reach below the knee. The defining anatomy is tibial-level inflow and a tibial or peroneal outflow target, rather than femoral or popliteal inflow. The conduit is vein, commonly the patient’s own vein.
Select the code from the documented bypass origin, distal target, and conduit. The operative report should identify the arteries joined, the vein conduit, laterality, and bypass performed. CMS assigns a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery services may be paid; co-surgeons require 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 35570 pays more and less in Massachusetts
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Boston | Unavailable | $1,381.65 |
| Rest Of Massachusetts | Unavailable | $1,314.40 |
How the 35570 rate is calculated
Each of 35570’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 · 35570
RVUs × geographic indexes × conversion factor
Work28.42
28.42 RVUs× 1.000 GPCI
Practice expense4.44
4.44 RVUs× 1.000 GPCI
Malpractice7.28
7.28 RVUs× 1.000 GPCI
Adjusted RVUs
40.1400
Conversion factor
$33.4009
Medicare rate
$1,340.71
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 35570
35570 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 35570
Arterial 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 · 35570
Arterial 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
35570 without 50 · national facility
$1,340.71
Arterial bypass
35570-50 · Bilateral: 150%
$2,011.07
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).
35570 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 35566Leg bypass
- Both describe vein bypasses to tibial or peroneal arteries. Choose 35566 when the bypass begins at the femoral artery; choose 35570 when it begins at a tibial artery.
- 35571Arterial bypass
- Both use vein for a distal bypass, but 35571 begins at the popliteal artery. Code 35570 requires tibial inflow.
- 35585Vein bypass
- Code 35585 describes an in-situ vein bypass from the femoral artery to a tibial or peroneal target. Code 35570 describes a tibial-origin bypass.
35570 billing questions
How is 35570 distinguished from 35566 or 35571?
Use the bypass origin and target arteries. This code is for tibial-to-tibial or tibial-to-peroneal bypass; 35566 has femoral inflow, while 35571 has popliteal inflow.
Does this code describe an in-situ vein bypass?
No. Code 35570 describes a tibial-origin bypass using a vein conduit. Code 35585 describes an in-situ vein bypass from the femoral artery to a tibial or peroneal artery.
Can vein harvest be reported separately?
When an upper-extremity vein is harvested for a lower-extremity bypass, code 35500 may be reported as an add-on when its requirements are met. Document the harvest site and work performed.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery.
How does CMS handle bilateral reporting and multiple procedures?
Bilateral reporting with modifier 50 is paid at 150%. In a same-session multiple-procedure setting, the highest-valued procedure is paid in full and other procedures at 50%.
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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