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CMS RVU26D · Effective 2026-10-01

37761 Perforator ligation Medicare reimbursement rates in Colorado

Reports open subfascial ligation of incompetent perforator veins in one leg, commonly to address venous hypertension associated with skin changes or ulceration. Compare 37761 office and facility rates across CMS payment localities in Colorado.

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 37761 in Colorado?

Colorado 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

$482.42

1 of 1 localities have a supported rate.

Payment area: Colorado

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 37761 in your payment locality →

Vascular surgery

About 37761: Open subfascial perforator vein ligation

Reports open subfascial ligation of incompetent perforator veins in one leg, commonly to address venous hypertension associated with skin changes or ulceration.

A surgeon exposes and ties off incompetent perforator veins beneath the fascia through an open approach in one leg. The procedure may be part of treatment for chronic venous insufficiency when perforator reflux contributes to venous hypertension, skin changes, or a lower-leg ulcer. Vascular surgeons commonly perform it in an operating-room setting.

Report the code for the open subfascial approach, not per vein treated; document the leg, operative technique, targeted perforators, and clinical indication. 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 is paid in full and others are subject to the standard 50% reduction. 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.

CMS billing rules for 37761

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 RVU8.90 · 61%
  • Practice expense (office) RVU3.48 · 24%
  • Malpractice RVU2.22 · 15%

210

Medicare services in 2024 · #4276 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.

37761 compared with similar codes

Office rates for Colorado, from the same CMS release.

37760

Perforator ligation

Radical open operation

No office rate

Both concern subfascial perforator veins in one leg, but 37760 specifies the radical procedure; 37761 specifies the open procedure.

37765

Stab phlebectomy

10–20 incisions, one leg

$422.25

Use 37765 for stab phlebectomy of 10–20 superficial leg veins, not open subfascial ligation of perforators.

37766

Stab phlebectomy

20 or more incisions

$501.08

Use 37766 for stab phlebectomy of more than 20 superficial leg veins; 37761 treats perforator veins beneath the fascia.

Compare 37761 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 37761 in Colorado.

PPRRVU2026_Oct_nonQPP.csv

4,694

Code
37761
Physician work
8.90
Practice expense
3.48
Malpractice
2.22

GPCI2026.csv

37

Locality
Colorado
Physician work
1.012
Practice expense
1.064
Malpractice
0.781
Facility calculation for 37761 in Colorado
ComponentRVULocality factorAdjusted
Physician work8.90× 1.0129.0068
Practice expense3.48× 1.0643.7027
Malpractice2.22× 0.7811.7338
Total RVUs14.4433
Conversion factor× 33.4009

Facility rate, Colorado$482.42

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
Work8.91.012
Practice expense3.481.064
Malpractice2.220.781

(8.9 × 1.012 + 3.48 × 1.064 + 2.22 × 0.781) × $33.4009 = $482.42

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.

37761 billing questions

How does this differ from 37760?

Both address perforator veins beneath the fascia in one leg. Code 37761 describes the open procedure; 37760 identifies the radical procedure.

Is the code reported per perforator vein?

No. It describes treatment in one leg, not a separate unit for each vein ligated. Document the treated leg and operative findings.

How is bilateral treatment reported?

For both legs, report bilateral treatment with modifier 50. CMS lists payment at 150% for the bilateral procedure.

What postoperative care is included?

The 90-day global period includes the day-before preoperative visit and related postoperative care. Routine follow-up related to the operation falls within that 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.

Can superficial varicose vein removal be reported with this code?

A separate phlebectomy code may describe treatment of superficial tributary varicosities when that work is performed. Document the distinct veins and work rather than counting those veins as perforators.

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 37761PPRRVU2026_Oct_nonQPP.csv, line 4,694 (RVU26D)
Geographic factors for ColoradoGPCI2026.csv, line 37 (RVU26D)
Open CMS sourceHow this rate is calculatedBuild a fee sheet