No office rate
This code concerns the internal or common carotid artery; 37600 is for the external carotid artery.
On this page
CMS RVU26D · Effective 2026-10-01
37605 Carotid ligation Medicare reimbursement rates in Connecticut
Surgical ligation of an internal or common carotid artery is reported when the surgeon ties off the vessel for a selected vascular or bleeding problem. Compare 37605 office and facility rates across CMS payment localities in Connecticut.
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 37605 in Connecticut?
Connecticut has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$716.68
1 of 1 localities have a supported rate.
Payment area: Connecticut
One mapped payment locality.
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 37605: Internal or common carotid artery ligation
Surgical ligation of an internal or common carotid artery is reported when the surgeon ties off the vessel for a selected vascular or bleeding problem.
The surgeon exposes and ties off an internal or common carotid artery, interrupting flow through the treated vessel. This uncommon open neck operation may be performed for selected carotid injury, uncontrolled bleeding, or an aneurysm when vessel ligation is the intended treatment. Vascular, trauma, or head-and-neck surgeons may perform it in an operating room, generally in a facility setting.
Report 37605 when the operative note supports ligation of the internal or common carotid artery; document the specific artery and the procedure performed. Distinguish the external carotid ligation code and the related carotid code whose descriptor specifies occlusion. The day-before preoperative visit and 90 days of related postoperative care are included in the 90-day global period. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple procedure reduction. Modifier 50 is inappropriate for this descriptor and anatomy. An assistant at surgery may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 37605
- 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 adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- 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 RVU13.92 · 69%
- Practice expense (office) RVU2.74 · 14%
- Malpractice RVU3.56 · 18%
47
Medicare services in 2024 · #5391 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.
37605 compared with similar codes
Office rates for Connecticut, from the same CMS release.
No office rate
Both concern internal or common carotid ligation, but 37606 specifies occlusion. The operative documentation must support the descriptor selected.
No office rate
35301 describes carotid endarterectomy, which removes obstructive material from the artery; 37605 is reported for tying off the artery.
Compare 37605 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.
1 of 1 payment localities
Connecticut →
Office / nonfacility
Unavailable
Facility
$716.68
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 37605 in Connecticut.
PPRRVU2026_Oct_nonQPP.csv
4,673
- Code
- 37605
- Physician work
- 13.92
- Practice expense
- 2.74
- Malpractice
- 3.56
GPCI2026.csv
38
- Locality
- Connecticut
- Physician work
- 1.020
- Practice expense
- 1.077
- Malpractice
- 1.210
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 13.92 | × 1.020 | 14.1984 |
| Practice expense | 2.74 | × 1.077 | 2.9510 |
| Malpractice | 3.56 | × 1.210 | 4.3076 |
| Total RVUs | 21.4570 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Connecticut$716.68
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 13.92 | 1.02 |
| Practice expense | 2.74 | 1.077 |
| Malpractice | 3.56 | 1.21 |
(13.92 × 1.02 + 2.74 × 1.077 + 3.56 × 1.21) × $33.4009 = $716.68
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
37605 billing questions
How is 37605 distinguished from 37600?
37605 is for ligation of the internal or common carotid artery. Use 37600 when the external carotid artery is the vessel ligated.
When should 37606 be considered instead?
The 37606 descriptor specifies occlusion with internal or common carotid artery ligation. Select it only when the operative documentation supports that added descriptor detail.
Can modifier 50 be reported for both sides?
No. The descriptor and anatomy make modifier 50 inappropriate for bilateral adjustment.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
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 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.
4,6703758F,,Pt ref pulm fx test/peakflow,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
4,6713759F,,Pt scrn dysphag/wt loss/nutr,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
4,67237600,,Ligation xtrnl carotid art,A,,12.11,5.59,NA,5.59,,2.13,19.83,19.83,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,67337605,,Ligation int/com carotid art,A,,13.92,2.74,NA,2.74,,3.56,20.22,20.22,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,67437606,,Lig int/com carotid art occl,A,,8.59,10.54,NA,10.54,,3.61,22.74,22.74,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,67537607,,Lig/banding angioacs av fstl,A,,6.09,2.79,NA,2.79,,1.48,10.36,10.36,0,090,0.09,0.84,0.07,2,0,1,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,67637609,,Ligation/bx temporal artery,A,,2.97,5.83,,2.01,,0.65,9.45,5.63,0,010,0.10,0.80,0.10,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899
4109102,FL,03,FORT LAUDERDALE,1.000,1.013,1.808