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CMS RVU26D · Effective 2026-10-01

37600 Carotid ligation Medicare reimbursement rates in Connecticut

Reports operative ligation of the external carotid artery when a surgeon needs to interrupt its blood flow, such as for control of head-and-neck bleeding. Compare 37600 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 37600 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

$699.75

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.

Find 37600 in your payment locality →

Vascular surgery

About 37600: External carotid artery ligation

Reports operative ligation of the external carotid artery when a surgeon needs to interrupt its blood flow, such as for control of head-and-neck bleeding.

The surgeon exposes and ties off the external carotid artery in the neck to interrupt blood flow to its branches. The operation may be performed to control severe bleeding in the head or neck or when operative management requires control of external-carotid inflow. Vascular, otolaryngology, and head-and-neck surgeons typically perform it in a hospital operating room.

Choose this code when the artery ligated is the external carotid, rather than the internal or common carotid. The operative report should identify the artery and document the ligation and clinical purpose. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. For multiple procedures in the same session, the highest-valued procedure is paid in full and the others at 50%. Modifier 50 is inappropriate. An assistant at surgery may be paid; co-surgeons require supporting documentation, and team surgery is not permitted.

CMS billing rules for 37600

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 RVU12.11 · 61%
  • Practice expense (office) RVU5.59 · 28%
  • Malpractice RVU2.13 · 11%

424

Medicare services in 2024 · #3683 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.

37600 compared with similar codes

Office rates for Connecticut, from the same CMS release.

37605

Carotid ligation

Internal or common carotid

No office rate

Use 37605 for ligation of the internal or common carotid artery; 37600 is specific to the external carotid.

37606

Carotid ligation

With vessel occlusion

No office rate

This code covers ligation or occlusion involving the internal or common carotid artery, not the external carotid.

37615

Arterial ligation

Major neck artery

No office rate

This code applies to ligation of a major artery in the neck when the procedure is not the specific external carotid service reported with 37600.

Compare 37600 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

Office and facility base rates · shared scale starting at $0

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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 37600 in Connecticut.

PPRRVU2026_Oct_nonQPP.csv

4,672

Code
37600
Physician work
12.11
Practice expense
5.59
Malpractice
2.13

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Facility calculation for 37600 in Connecticut
ComponentRVULocality factorAdjusted
Physician work12.11× 1.02012.3522
Practice expense5.59× 1.0776.0204
Malpractice2.13× 1.2102.5773
Total RVUs20.9499
Conversion factor× 33.4009

Facility rate, Connecticut$699.75

Values as parsed from CMS release RVU26D, effective 2026-10-01. The amount is rounded to the nearest cent only at the end.
Explore RVUs, geographic factors and the full formula

Facility

Facility calculation inputs
ComponentRVULocal GPCI
Work12.111.02
Practice expense5.591.077
Malpractice2.131.21

(12.11 × 1.02 + 5.59 × 1.077 + 2.13 × 1.21) × $33.4009 = $699.75

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.

37600 billing questions

How does 37600 differ from ligation of the internal or common carotid?

Use 37600 when the external carotid artery is ligated. Codes 37605 and 37606 address the internal or common carotid instead.

What documentation supports reporting 37600?

The operative report should identify the external carotid artery, describe its exposure and ligation, and state the clinical reason for interrupting its blood flow.

Can modifier 50 be used for bilateral ligation?

No. The CMS bilateral adjustment does not apply to this code, and modifier 50 is inappropriate.

Is related postoperative care included?

Yes. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.

How are other procedures in the same session paid?

The highest-valued procedure is paid in full, and other procedures in the same session are subject to the standard 50% multiple-procedure reduction.

Can an assistant or co-surgeon be reported?

An assistant at surgery may be paid. Co-surgeons are paid only when supporting documentation is provided; 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.

RVUs for 37600PPRRVU2026_Oct_nonQPP.csv, line 4,672 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)
Open CMS sourceHow this rate is calculatedBuild a fee sheet