No office rate
Both codes describe an ilio-iliac bypass, but 35563 is for a vein conduit; 35663 is for a nonvein conduit.
On this page
CMS RVU26D · Effective 2026-10-01
35663 Arterial bypass Medicare reimbursement rates in Washington
Reports surgical bypass from one iliac artery to another using a nonvein conduit to reroute blood around a diseased or unusable arterial segment. Compare 35663 office and facility rates across CMS payment localities in Washington.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 35663 in Washington?
Washington has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$1079.34–$1142.18
2 of 2 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Vascular surgery
About 35663: Nonvein ilio-iliac bypass graft
Reports surgical bypass from one iliac artery to another using a nonvein conduit to reroute blood around a diseased or unusable arterial segment.
A vascular surgeon creates a new route for blood flow between iliac arteries, bypassing a diseased or unusable segment. The graft is made from a nonvein conduit, commonly a synthetic graft. The operation is performed in a surgical setting for patients who need iliac revascularization; the documented origin and destination arteries distinguish this service from bypasses to the aorta, femoral artery, or another vascular territory.
Select the code based on the iliac-to-iliac route and nonvein conduit, not on the diagnosis alone. The operative report should identify the inflow and outflow arteries, bypass course, and graft material. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures at 50%. Modifier 50 bilateral reporting 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.
CMS billing rules for 35663
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral procedure with modifier 50 is paid at 150%.
- Assistant at surgery
- Assistant at surgery may be paid.
- Co-surgeons
- Co-surgeons paid only with supporting documentation.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU23.33 · 70%
- Practice expense (office) RVU3.93 · 12%
- Malpractice RVU5.97 · 18%
52
Medicare services in 2024 · #5328 by national volume
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.
35663 compared with similar codes
Office rates for Washington, from the same CMS release.
No office rate
Use 35665 when the bypass runs from an iliac artery to a femoral artery. This code requires iliac arteries at both ends.
No office rate
Use 35661 for a femoral-to-femoral bypass. This code describes an iliac-to-iliac route.
No office rate
Use 35637 when the aorta supplies the bypass to an iliac artery; this code has an iliac artery as the source and destination.
Compare 35663 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Rest Of Washington →
Office / nonfacility
Unavailable
Facility
$1079.34
Seattle (King Cnty) →
Office / nonfacility
Unavailable
Facility
$1142.18
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35663 billing questions
How is this code distinguished from an iliofemoral bypass?
Use this code when both ends of the bypass are iliac arteries. A bypass from an iliac artery to a femoral artery follows a different route.
Does the graft material affect code selection?
Yes. This code describes an iliac-to-iliac bypass using a nonvein conduit. The vein-graft counterpart is 35563.
What should the operative report document?
Document the inflow and outflow arteries, the bypass route, and the conduit material. Those details support both the ilio-iliac anatomy and nonvein graft selection.
How are same-session procedures and bilateral reporting handled?
For multiple procedures in the same session, CMS pays the highest-valued procedure in full and other procedures at 50%. Bilateral reporting with modifier 50 is paid at 150%.
Are assistant or co-surgeon services payable?
An assistant at surgery may be paid. Co-surgeons are paid only with supporting documentation; team surgery is not permitted.
Which postoperative visits are 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 indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
4,39135654,,Bpg axillary-femoral-femoral,A,,25.62,4.88,NA,4.88,,6.52,37.02,37.02,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,39235656,,Bpg femoral-popliteal,A,,19.96,4.07,NA,4.07,,5.07,29.10,29.10,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,39335661,,Bpg femoral-femoral,A,,19.84,4.53,NA,4.53,,5.04,29.41,29.41,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,39435663,,Bpg ilioiliac,A,,23.33,3.93,NA,3.93,,5.97,33.23,33.23,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,39535665,,Bpg iliofemoral,A,,21.79,4.62,NA,4.62,,5.51,31.92,31.92,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,39635666,,Bpg fem-ant tib pst tib/prnl,A,,23.07,6.00,NA,6.00,,5.89,34.96,34.96,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,39735671,,Bpg pop-tibl/-prnl artery,A,,20.25,5.39,NA,5.39,,5.16,30.80,30.80,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00