CPT code 35631: Aortic bypass, celiac, mesenteric, and renal targets2026 Medicare rate & RVUs in Texas
Reports open aortic bypass grafting to the celiac, mesenteric, and renal arteries when all three visceral and renal territories are revascularized.
CMS doesn’t publish an office rate for 35631 in Texas.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What 35631 covers
A vascular surgeon performs an open bypass from the aorta to the celiac, mesenteric, and renal arteries using graft material other than vein. The operation may be used for complex occlusive disease affecting these arterial territories. It is typically performed in a hospital operating room, with the operative report identifying the aortic inflow, each distal target, and the graft material and configuration used.
Report this code when the documented bypass includes all three named target territories; a bypass from the aorta to only one of them is represented by a different code. The 90-day global period includes the day-before preoperative visit and related postoperative care during the following 90 days. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are reduced to 50%. For a bilateral service reported with modifier 50, payment is 150%. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation. 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 35631 pays more and less in Texas
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
8 of 8 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Austin, TX | Unavailable | $1,654.14 |
| Beaumont, TX | Unavailable | $1,634.66 |
| Brazoria, TX | Unavailable | $1,616.00 |
| Dallas, TX | Unavailable | $1,641.45 |
| Fort Worth, TX | Unavailable | $1,643.30 |
| Galveston, TX | Unavailable | $1,630.72 |
| Houston, TX | Unavailable | $1,794.17 |
| Rest of Texas | Unavailable | $1,634.80 |
How the 35631 rate is calculated
Each of 35631’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 · 35631
RVUs × geographic indexes × conversion factor
Work35.13
35.13 RVUs× 1.000 GPCI
Practice expense6.06
6.06 RVUs× 1.000 GPCI
Malpractice8.93
8.93 RVUs× 1.000 GPCI
Adjusted RVUs
50.1200
Conversion factor
$33.4009
Medicare rate
$1,674.05
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 35631
35631 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 35631
Aortic bypass, celiac, mesenteric, and renal targets
| 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 · 35631
Aortic bypass, celiac, mesenteric, and renal targets
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
35631 without 50 · national facility
$1,674.05
Aortic bypass, celiac, mesenteric, and renal targets
35631-50 · Bilateral: 150%
$2,511.08
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).
35631 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 35632Arterial bypassIliac inflow to celiac artery
- 35632 describes an iliac-to-celiac bypass. This code uses aortic inflow and includes celiac, mesenteric, and renal targets.
- 35633Arterial bypassIliac to mesenteric artery
- 35633 describes an iliac-to-mesenteric bypass. This code describes aortic inflow to the celiac, mesenteric, and renal arteries.
- 35634Arterial bypassIliac-to-renal, non-vein graft
- 35634 describes an iliac-to-renal bypass. This code covers aortic bypass to three arterial territories, including the renal arteries.
- 35636Arterial bypassSplenic-to-renal, non-vein graft
- 35636 is a splenorenal bypass, using a different inflow route for renal revascularization; this code uses the aorta and includes celiac and mesenteric targets as well.
35631 billing questions
When should this code be selected instead of an aortic bypass to one artery?
Use it when the operation documents bypass from the aorta to the celiac, mesenteric, and renal arteries. A bypass to only one of those targets is not this full three-territory service.
What operative details support reporting this code?
The operative report should identify the aorta as the inflow and document each of the three distal arterial target territories, along with the graft material and configuration.
Does the code represent the bypass to all three target territories?
Yes. The code represents the aortic bypass service involving the celiac, mesenteric, and renal arteries; the report should substantiate all three targets.
How is this code paid when other procedures are performed in the same session?
Under the standard multiple procedure reduction, the highest-valued procedure is paid in full and the other procedures are paid at 50%.
Can assistant or co-surgeon services be reported?
Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation, and team surgery is not permitted.
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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