CPT code 27437: Patellar arthroplasty, without prosthesis2026 Medicare rate & RVUs in Vermont

Reports surgical reshaping or reconstruction of the patella without a prosthetic implant when the operative treatment is limited to the kneecap.

CMS RVU26DEffective Oct 1, 2026One payment locality356 Medicare services in 2024

In Vermont, Medicare pays $591.85 for 27437 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$591.85Hospital or facility

Check a contract rate as a % of Medicare · 27437 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 27437 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Vermont
  2. What 27437 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 27437 covers

An orthopedic surgeon performs this operation to reshape or reconstruct the kneecap’s joint surface without placing a prosthesis. It is used for selected patellar conditions where the operative plan addresses the patella itself, rather than replacing the patellar surface with an implant. The procedure is generally performed in a hospital or ambulatory surgery setting. The operative report should identify the patellar condition, describe the work performed on the patella, and make clear that no prosthetic patellar component was implanted.

Select this code based on the documented procedure, not simply a diagnosis of patellar pain or cartilage disease. Distinguish it from patellar arthroplasty with a prosthesis and from procedures directed at recurrent patellar dislocation or broader knee replacement. Medicare assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment is restricted; co-surgeons are paid only with 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.

How Vermont compares for 27437

Across 109 of 109 payment localities, the facility rate for 27437 runs from $556.69 in Arkansas to $760.51 in Alaska. Vermont pays $591.85. The RVUs are the same everywhere; the geographic indexes change the dollars.

27437 in Vermont vs other payment areas
  1. Vermont · this page$591.85
  2. Los Angeles, CA · California$666.09+$74.24
  3. Washington, DC area · District of Columbia$696.10+$104.25
  4. Miami, FL · Florida$730.07+$138.22
  5. Chicago, IL · Illinois$707.92+$116.07
  6. Manhattan, NY · New York$723.72+$131.87
  7. Alaska · Alaska$760.51+$168.66

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

Every other payment area

27437 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$564.19
ArkansasArkansas—$556.69
ArizonaArizona—$607.63
Bakersfield, CACalifornia—$632.59
Chico, CACalifornia—$627.53
El Centro, CACalifornia—$627.83
Fresno, CACalifornia—$627.53
Hanford, CACalifornia—$627.53

27437 rates by state

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

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Local rates. Clear comparisons.

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

View every state and territory as a table
27437 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 27437 in every payment locality

How the 27437 rate is calculated

Each of 27437’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 · 27437

RVUs × geographic indexes × conversion factor

Office or facility?

Work8.71

8.71 RVUs× 1.000 GPCI

Practice expense8.16

8.16 RVUs× 1.000 GPCI

Malpractice1.84

1.84 RVUs× 1.000 GPCI

Adjusted RVUs

18.7100

Conversion factor

$33.4009

Medicare rate

$624.93

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

The exact Vermont inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

2,892

Code
27437
Physician work
8.71
Practice expense
8.16
Malpractice
1.84

GPCI2026.csv

105

Locality
Vermont
Physician work
1.000
Practice expense
0.990
Malpractice
0.506
Facility calculation for 27437 in Vermont
ComponentRVULocality factorAdjusted
Physician work8.71× 1.0008.7100
Practice expense8.16× 0.9908.0784
Malpractice1.84× 0.5060.9310
Total RVUs17.7194
Conversion factor× 33.4009

Facility rate, Vermont$591.85

Facility: (8.71 × 1 + 8.16 × 0.99 + 1.84 × 0.506) × $33.4009 = $591.85

Open 27437 in the RVU calculator

Payment rules and modifiers for 27437

27437 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 27437

Patellar arthroplasty, without prosthesis

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are 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)1Not paid (statutory restriction).
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 27437

Patellar arthroplasty, without prosthesis

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.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

27437 without 50 · national facility

$624.93

Patellar arthroplasty, without prosthesis

27437-50 · Bilateral: 150%

$937.39

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 27437 has changed in Vermont

27437 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

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

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
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$591.85RVU26D
2026-07-01Not available in this setting$591.85RVU26C
2026-04-01Not available in this setting$591.85RVU26B
2026-01-01Not available in this setting$591.85RVU26A
2025-10-01Not available in this setting$627.05RVU25D
2025-07-01Not available in this setting$627.05RVU25C
2025-04-01Not available in this setting$627.05RVU25B
2025-01-01Not available in this setting$627.05RVU25A
2024-10-01Not available in this setting$639.68RVU24D
2024-07-01Not available in this setting$639.68RVU24C
2024-04-01Not available in this setting$639.68RVU24B
2024-03-09Not available in this setting$639.68RVU24AR
2024-01-01Not available in this setting$629.24RVU24A
2023-10-01Not available in this setting$648.04RVU23D
2023-07-01Not available in this setting$648.04RVU23C
2023-04-01Not available in this setting$648.04RVU23B
2023-01-01Not available in this setting$648.04RVU23A
2022-10-01Not available in this setting$654.36RVU22D
2022-07-01Not available in this setting$654.36RVU22C
2022-04-01Not available in this setting$654.36RVU22B
2022-01-01Not available in this setting$654.36RVU22A
2021-10-01Not available in this setting$656.35RVU21D
2021-07-01Not available in this setting$656.35RVU21C
2021-04-01Not available in this setting$656.35RVU21B
2021-01-01Not available in this setting$656.35RVU21A
2020-10-01Not available in this setting$662.59RVU20D
2020-07-01Not available in this setting$662.59RVU20C
2020-04-01Not available in this setting$662.59RVU20B
2020-01-01Not available in this setting$662.59RVU20A
2019-10-01Not available in this setting$663.52RVU19D
2019-07-01Not available in this setting$663.52RVU19C
2019-04-01Not available in this setting$663.52RVU19B
2019-01-01Not available in this setting$663.52RVU19A
2018-10-01Not available in this setting$663.16RVU18D
2018-07-01Not available in this setting$663.16RVU18C
2018-04-01Not available in this setting$663.16RVU18B
2018-01-01Not available in this setting$663.16RVU18AR1
2017-10-01Not available in this setting$661.50RVU17D
2017-07-01Not available in this setting$661.50RVU17C
2017-04-01Not available in this setting$661.50RVU17B
2017-01-01Not available in this setting$661.50RVU17A
2016-10-01Not available in this setting$659.91RVU16D
2016-07-01Not available in this setting$659.91RVU16C
2016-04-01Not available in this setting$659.91RVU16B
2016-01-01Not available in this setting$659.91RVU16A
2015-10-01Not available in this setting$664.35RVU15D
2015-07-01Not available in this setting$664.35RVU15C
2015-04-01Not available in this setting$661.05RVU15B
2015-01-01Not available in this setting$661.05RVU15A
2014-10-01Not available in this setting$651.74RVU14D
2014-07-01Not available in this setting$651.74RVU14C
2014-04-01Not available in this setting$651.74RVU14B
2014-01-01Not available in this setting$651.74RVU14A
2013-10-01Not available in this settingRate data unavailableRVU13D
2013-07-01Not available in this settingRate data unavailableRVU13C
2013-04-01Not available in this settingRate data unavailableRVU13B
2013-01-01Not available in this settingRate data unavailableRVU13AR

Price 27437 for an earlier date of service

Where the Vermont rate applies

Vermont is a Medicare payment area, not a city. Our Census mapping connects it to 180 cities and communities in Vermont. Some span more than one payment area; confirm with the service ZIP.

  • Albany
  • Alburgh
  • Algiers
  • Arlington
  • Ascutney
  • Bakersfield
  • Barnet
  • Barre

Browse all communities in Vermont

27437 billing questions

How does this differ from 27438?

Code 27437 describes patellar arthroplasty without a prosthesis. Use 27438 when the patellar arthroplasty includes a prosthetic implant.

Is this the code for recurrent patellar dislocation?

Not when the operation is directed at stabilizing a dislocating patella. Codes 27420 and 27422 describe patellar reconstruction procedures for that operative goal.

What documentation supports reporting 27437?

The operative report should identify the patella as the treated structure, describe the arthroplasty work, and establish that no patellar prosthesis was implanted.

Can modifier 50 be used when both patellae are treated?

Yes. CMS identifies this as a bilateral procedure; bilateral reporting with modifier 50 is paid at 150%.

What postoperative care is included?

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

How are assistant and co-surgeon services handled?

Assistant-at-surgery payment is restricted. Co-surgeons are paid only with supporting documentation, and 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

Show the CMS file lines behind this rate
RVUs for 27437PPRRVU2026_Oct_nonQPP.csv, line 2,892 (RVU26D)
Geographic factors for VermontGPCI2026.csv, line 105 (RVU26D)

Open CMS sourceHow we calculate rates

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