CPT code 37273: Peripheral atherectomy, complex, initial vessel2026 Medicare rate & RVUs in Montana

Reports complex endovascular atherectomy in the initial femoral or popliteal artery vessel treated for peripheral arterial disease.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Montana, Medicare pays $13,228.24 for 37273 in the office and $575.98 when it’s performed in a hospital or facility.

$13,228.24Office (non-facility)
$575.98Hospital or facility
−0.0%vs the national office rate ($13,228.43)

Check a contract rate as a % of Medicare · 37273 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 37273 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Montana
  2. What 37273 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 37273 covers

This code represents endovascular atherectomy to restore flow through a complex lesion in a femoral or popliteal artery. It is typically performed by a vascular surgeon, interventional radiologist, or interventional cardiologist using catheter-based equipment. Balloon angioplasty in the treated vessel is included when performed. The code identifies the initial vessel treated with complex atherectomy; it is not the code for a simple atherectomy or for treatment that includes stent placement.

Select the complex level using the applicable CPT criteria, and document the target artery, laterality, lesion characteristics supporting that level, and the atherectomy performed. Use the corresponding additional-vessel code when another qualifying vessel is treated. The procedure has a 0-day global period, so same-day preoperative and postoperative care is included. With multiple procedures in one session, the highest-valued procedure is paid in full and others at 50%. Modifier 50 for bilateral treatment is paid at 150%. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are 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.

How Montana compares for 37273

Across 109 of 109 payment localities, the office rate for 37273 runs from $11,390.41 in Arkansas to $18,850.30 in San Benito County, CA. Montana pays $13,228.24. The RVUs are the same everywhere; the geographic indexes change the dollars.

37273 in Montana vs other payment areas
  1. Montana · this page$13,228.24
  2. Los Angeles, CA · California$15,540.61+$2,312.37
  3. Washington, DC area · District of Columbia$15,524.68+$2,296.44
  4. Miami, FL · Florida$13,893.15+$664.91
  5. Chicago, IL · Illinois$13,416.49+$188.25
  6. Manhattan, NY · New York$15,369.89+$2,141.65
  7. Alaska · Alaska$14,223.54+$995.30

Other areas in Montana first, then benchmark localities. Bars start at $0.

Every other payment area

37273 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$11,598.60$527.87
ArkansasArkansas$11,390.41$522.12
ArizonaArizona$12,820.82$560.78
Bakersfield, CACalifornia$14,420.16$553.29
Chico, CACalifornia$14,412.47$545.59
El Centro, CACalifornia$14,412.94$546.06
Fresno, CACalifornia$14,412.47$545.59
Hanford, CACalifornia$14,412.47$545.59

37273 rates by state

Office rate range in each state. Select a state to see its payment localities.

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

$11,390.41

$16,631.39

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
37273 office rate range by state
State / territoryOffice rate rangeLocalities
AK$14,223.541
AL$11,598.601
AR$11,390.411
AZ$12,820.821
CA$14,412.47–$18,850.3029
CO$14,026.551
CT$14,235.451
DC$15,524.681
DE$13,068.501
FL$12,716.28–$13,893.153
GA$11,873.47–$13,451.962
GU$14,930.561
HI$14,930.561
IA$12,091.251
ID$12,161.951
IL$12,175.26–$13,647.084
IN$12,252.161
KS$11,961.451
KY$11,809.341
LA$11,762.52–$12,491.142
MA$13,889.90–$15,701.672
MD$13,377.50–$15,524.683
ME$12,175.93–$13,079.382
MI$12,134.53–$12,847.872
MN$13,531.021
MO$11,471.63–$12,618.403
MS$11,436.861
MT$13,228.241
NC$12,342.791
ND$13,172.681
NE$12,191.171
NH$13,737.921
NJ$14,423.97–$15,295.422
NM$12,192.141
NV$13,225.471
NY$12,564.92–$15,738.565
OH$12,123.171
OK$11,847.241
OR$13,149.70–$14,622.262
PA$12,180.82–$13,775.362
PR$13,366.861
RI$13,645.821
SC$12,248.181
SD$13,166.111
TN$12,028.111
TX$12,077.62–$13,955.918
UT$12,456.091
VA$12,984.72–$15,524.682
VI$13,366.861
VT$13,054.931
WA$13,885.25–$16,118.132
WI$12,629.541
WV$11,603.511
WY$13,204.021

See 37273 in every payment locality

How the 37273 rate is calculated

Each of 37273’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 · 37273

RVUs × geographic indexes × conversion factor

Office or facility?

Work12.63

12.63 RVUs× 1.000 GPCI

Practice expense380.61

380.61 RVUs× 1.000 GPCI

Malpractice2.81

2.81 RVUs× 1.000 GPCI

Adjusted RVUs

396.0500

Conversion factor

$33.4009

Medicare rate

$13,228.43

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Montana inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,633

Code
37273
Physician work
12.63
Practice expense
380.61
Malpractice
2.81

GPCI2026.csv

71

Locality
Montana
Physician work
1.000
Practice expense
1.000
Malpractice
0.998
Office calculation for 37273 in Montana
ComponentRVULocality factorAdjusted
Physician work12.63× 1.00012.6300
Practice expense380.61× 1.000380.6100
Malpractice2.81× 0.9982.8044
Total RVUs396.0444
Conversion factor× 33.4009

Office rate, Montana$13228.24

Office: (12.63 × 1 + 380.61 × 1 + 2.81 × 0.998) × $33.4009 = $13228.24

Facility: (12.63 × 1 + 1.81 × 1 + 2.81 × 0.998) × $33.4009 = $575.98

Open 37273 in the RVU calculator

Payment rules and modifiers for 37273

The CMS indicators that decide how 37273 is paid alongside other services.

CMS payment indicators · 37273

Peripheral atherectomy, complex, initial vessel

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

37273 without 50 · national office

$13,228.43

Peripheral atherectomy, complex, initial vessel

37273-50 · Bilateral: 150%

$19,842.65

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).

When to use modifier 50

How 37273 has changed in Montana

37273 · Office / nonfacility

$13228.24

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release
  1. January 1, 2026

    RVU26A

    No ratechanged to$13228.24

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D, RVU17A, RVU17B, RVU17C, RVU17D, RVU18AR1, RVU18B, RVU18C, RVU18D, RVU19A, RVU19B, RVU19C, RVU19D, RVU20A, RVU20B, RVU20C, RVU20D, RVU21A, RVU21B, RVU21C, RVU21D, RVU22A, RVU22B, RVU22C, RVU22D, RVU23A, RVU23B, RVU23C, RVU23D, RVU24A, RVU24AR, RVU24B, RVU24C, RVU24D, RVU25A, RVU25B, RVU25C, RVU25D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$13,228.24$575.98RVU26D
2026-07-01$13,228.24$575.98RVU26C
2026-04-01$13,228.24$575.98RVU26B
2026-01-01$13,228.24$575.98RVU26A
2025-10-01Not in this releaseNot in this releaseRVU25D
2025-07-01Not in this releaseNot in this releaseRVU25C
2025-04-01Not in this releaseNot in this releaseRVU25B
2025-01-01Not in this releaseNot in this releaseRVU25A
2024-10-01Not in this releaseNot in this releaseRVU24D
2024-07-01Not in this releaseNot in this releaseRVU24C
2024-04-01Not in this releaseNot in this releaseRVU24B
2024-03-09Not in this releaseNot in this releaseRVU24AR
2024-01-01Not in this releaseNot in this releaseRVU24A
2023-10-01Not in this releaseNot in this releaseRVU23D
2023-07-01Not in this releaseNot in this releaseRVU23C
2023-04-01Not in this releaseNot in this releaseRVU23B
2023-01-01Not in this releaseNot in this releaseRVU23A
2022-10-01Not in this releaseNot in this releaseRVU22D
2022-07-01Not in this releaseNot in this releaseRVU22C
2022-04-01Not in this releaseNot in this releaseRVU22B
2022-01-01Not in this releaseNot in this releaseRVU22A
2021-10-01Not in this releaseNot in this releaseRVU21D
2021-07-01Not in this releaseNot in this releaseRVU21C
2021-04-01Not in this releaseNot in this releaseRVU21B
2021-01-01Not in this releaseNot in this releaseRVU21A
2020-10-01Not in this releaseNot in this releaseRVU20D
2020-07-01Not in this releaseNot in this releaseRVU20C
2020-04-01Not in this releaseNot in this releaseRVU20B
2020-01-01Not in this releaseNot in this releaseRVU20A
2019-10-01Not in this releaseNot in this releaseRVU19D
2019-07-01Not in this releaseNot in this releaseRVU19C
2019-04-01Not in this releaseNot in this releaseRVU19B
2019-01-01Not in this releaseNot in this releaseRVU19A
2018-10-01Not in this releaseNot in this releaseRVU18D
2018-07-01Not in this releaseNot in this releaseRVU18C
2018-04-01Not in this releaseNot in this releaseRVU18B
2018-01-01Not in this releaseNot in this releaseRVU18AR1
2017-10-01Not in this releaseNot in this releaseRVU17D
2017-07-01Not in this releaseNot in this releaseRVU17C
2017-04-01Not in this releaseNot in this releaseRVU17B
2017-01-01Not in this releaseNot in this releaseRVU17A
2016-10-01Not in this releaseNot in this releaseRVU16D
2016-07-01Not in this releaseNot in this releaseRVU16C
2016-04-01Not in this releaseNot in this releaseRVU16B
2016-01-01Not in this releaseNot in this releaseRVU16A
2015-10-01Not in this releaseNot in this releaseRVU15D
2015-07-01Not in this releaseNot in this releaseRVU15C
2015-04-01Not in this releaseNot in this releaseRVU15B
2015-01-01Not in this releaseNot in this releaseRVU15A
2014-10-01Not in this releaseNot in this releaseRVU14D
2014-07-01Not in this releaseNot in this releaseRVU14C
2014-04-01Not in this releaseNot in this releaseRVU14B
2014-01-01Not in this releaseNot in this releaseRVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 37273 for an earlier date of service

Where the Montana rate applies

Montana is a Medicare payment area, not a city. Our Census mapping connects it to 497 cities and communities in Montana. Some span more than one payment area; confirm with the service ZIP.

  • Absarokee
  • Acton
  • Alberton
  • Alder
  • Alzada
  • Amsterdam
  • Anaconda-Deer Lodge County
  • Antelope

Browse all communities in Montana

37273 billing questions

How is complex atherectomy distinguished from simple atherectomy?

Use the CPT criteria for the complex level rather than relying only on the operator's description. The record should support the lesion characteristics that qualify the treated vessel as complex.

Is balloon angioplasty separately reported in the treated vessel?

Angioplasty performed in the same vessel as this atherectomy is included in the revascularization service. Do not report a separate angioplasty code for that work.

When is 37274 used with this code?

37274 identifies each additional vessel treated with complex atherectomy. Use 37273 for the initial qualifying vessel and document each treated vessel.

What if a stent is also placed in the treated vessel?

Use the code describing the applicable stent-and-atherectomy treatment rather than reporting this atherectomy-only code for that vessel. For complex treatment, compare with 37277.

How is bilateral treatment reported?

Report bilateral treatment with modifier 50. CMS pays the bilateral procedure at 150%.

Can an assistant surgeon be reported?

Assistant-at-surgery payment is allowed only when medical necessity is documented. Co-surgeons and team surgery are not permitted for this code.

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
RVUs for 37273PPRRVU2026_Oct_nonQPP.csv, line 4,633 (RVU26D)
Geographic factors for MontanaGPCI2026.csv, line 71 (RVU26D)

Open CMS sourceHow we calculate rates

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