CPT code 35361: Arterial endarterectomy, aorta2026 Medicare rate & RVUs in Michigan
Open aortic thromboendarterectomy removes obstructive plaque from the aorta to restore blood flow, with patch grafting included when performed.
CMS doesn’t publish an office rate for 35361 in Michigan.
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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What 35361 covers
A vascular surgeon uses this code for open removal of obstructive atherosclerotic material from the aorta to improve its channel for blood flow. A patch graft may be used to repair or enlarge the vessel after plaque removal and is included in the service. The procedure is generally performed in an operating room, commonly in a hospital facility, for significant aortic occlusive disease requiring surgical treatment.
Select this code when the treated artery is the aorta; an aortoiliac procedure or endarterectomy of another named artery belongs to a different code. The operative report should identify the aorta as the treatment site and document plaque removal and any patch repair. This is major surgery with a 90-day global period, including the day-before preoperative visit and related postoperative care for 90 days. When multiple procedures are performed in the same session, the highest-valued is paid in full and others at 50%. Bilateral reporting with modifier 50 is paid at 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 35361 pays more and less in Michigan
| Payment locality | Office | Facility |
|---|---|---|
| Detroit, MI | Unavailable | $1,551.73 |
| Rest of Michigan | Unavailable | $1,403.78 |
How the 35361 rate is calculated
Each of 35361’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 · 35361
RVUs × geographic indexes × conversion factor
Work29.48
29.48 RVUs× 1.000 GPCI
Practice expense4.42
4.42 RVUs× 1.000 GPCI
Malpractice7.54
7.54 RVUs× 1.000 GPCI
Adjusted RVUs
41.4400
Conversion factor
$33.4009
Medicare rate
$1,384.13
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 35361
35361 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 35361
Arterial endarterectomy, aorta
| 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 · 35361
Arterial endarterectomy, aorta
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
35361 without 50 · national facility
$1,384.13
Arterial endarterectomy, aorta
35361-50 · Bilateral: 150%
$2,076.20
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).
35361 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 35331Arterial endarterectomyAortoiliac segment
- Choose 35361 for aortic thromboendarterectomy. Choose 35331 when the operation treats the aortoiliac segment.
- 35321Arterial endarterectomyAxillary-brachial artery
- 35321 is for iliac artery treatment; 35361 is for treatment of the aorta.
- 35301Arterial endarterectomyCarotid, vertebral, or subclavian
- 35301 applies to the carotid, vertebral, or subclavian territory, while 35361 applies to the aorta.
35361 billing questions
How is this code distinguished from 35331?
Use 35361 for thromboendarterectomy of the aorta. Code 35331 describes treatment involving the aortoiliac segment.
Is patch grafting separately reported?
No. Patch grafting, when performed as part of the aortic thromboendarterectomy, is included in this service.
What documentation supports selecting this code?
The operative report should identify the aorta as the treated vessel and describe removal of obstructive plaque, including any patch repair.
How does the 90-day global period affect postoperative billing?
The day-before preoperative visit and related postoperative care for 90 days are included in the major-surgery global period.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation; 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
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