CPT code 23415: Shoulder decompression, open ligament release2026 Medicare rate & RVUs in Connecticut

Reports open release of the shoulder’s coracoacromial ligament, with or without acromioplasty, during surgery for subacromial impingement.

CMS RVU26DEffective Oct 1, 2026One payment locality257 Medicare services in 2024

In Connecticut, Medicare pays $700.11 for 23415 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$700.11Hospital or facility

Check a contract rate as a % of Medicare · 23415 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 23415 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 23415 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 23415 covers

The surgeon releases the coracoacromial ligament, which spans the coracoid process and acromion, to increase clearance in the subacromial space. The procedure may include reshaping the acromion. An orthopedic surgeon typically performs it through an open approach during surgery for shoulder impingement, sometimes in the same session as rotator cuff repair.

Report 23415 when the operative work includes an open coracoacromial ligament release; acromioplasty may be performed with it. The operative report should identify the ligament release and any acromial work, rather than relying on an impingement diagnosis alone. CMS 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 one session, the highest-valued procedure is paid in full and other procedures at 50%. For bilateral work reported with modifier 50, CMS pays at 150%. Assistant-at-surgery payment is restricted; co-surgeon payment requires 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 Connecticut compares for 23415

Across 109 of 109 payment localities, the facility rate for 23415 runs from $586.64 in Arkansas to $800.13 in Alaska. Connecticut pays $700.11. The RVUs are the same everywhere; the geographic indexes change the dollars.

23415 in Connecticut vs other payment areas
  1. Connecticut · this page$700.11
  2. Los Angeles, CA · California$704.05+$3.94
  3. Washington, DC area · District of Columbia$734.22+$34.11
  4. Miami, FL · Florida$764.94+$64.83
  5. Chicago, IL · Illinois$741.94+$41.83
  6. Manhattan, NY · New York$761.72+$61.61
  7. Alaska · Alaska$800.13+$100.02

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

Every other payment area

23415 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$594.52
ArkansasArkansas—$586.64
ArizonaArizona—$640.26
Bakersfield, CACalifornia—$668.29
Chico, CACalifornia—$663.18
El Centro, CACalifornia—$663.49
Fresno, CACalifornia—$663.18
Hanford, CACalifornia—$663.18

23415 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.

View every state and territory as a table
23415 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 23415 in every payment locality

How the 23415 rate is calculated

Each of 23415’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 · 23415

RVUs × geographic indexes × conversion factor

Office or facility?

Work9.00

9.00 RVUs× 1.000 GPCI

Practice expense8.86

8.86 RVUs× 1.000 GPCI

Malpractice1.85

1.85 RVUs× 1.000 GPCI

Adjusted RVUs

19.7100

Conversion factor

$33.4009

Medicare rate

$658.33

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

The exact Connecticut inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

2,200

Code
23415
Physician work
9.00
Practice expense
8.86
Malpractice
1.85

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Facility calculation for 23415 in Connecticut
ComponentRVULocality factorAdjusted
Physician work9.00× 1.0209.1800
Practice expense8.86× 1.0779.5422
Malpractice1.85× 1.2102.2385
Total RVUs20.9607
Conversion factor× 33.4009

Facility rate, Connecticut$700.11

Facility: (9 × 1.02 + 8.86 × 1.077 + 1.85 × 1.21) × $33.4009 = $700.11

Open 23415 in the RVU calculator

Payment rules and modifiers for 23415

23415 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 23415

Shoulder decompression, open ligament release

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 · 23415

Shoulder decompression, open ligament release

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

23415 without 50 · national facility

$658.33

Shoulder decompression, open ligament release

23415-50 · Bilateral: 150%

$987.50

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 23415 has changed in Connecticut

23415 · 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$700.11RVU26D
2026-07-01Not available in this setting$700.11RVU26C
2026-04-01Not available in this setting$700.11RVU26B
2026-01-01Not available in this setting$700.11RVU26A
2025-10-01Not available in this setting$746.29RVU25D
2025-07-01Not available in this setting$746.29RVU25C
2025-04-01Not available in this setting$746.29RVU25B
2025-01-01Not available in this setting$746.29RVU25A
2024-10-01Not available in this setting$758.11RVU24D
2024-07-01Not available in this setting$758.11RVU24C
2024-04-01Not available in this setting$758.11RVU24B
2024-03-09Not available in this setting$758.11RVU24AR
2024-01-01Not available in this setting$745.74RVU24A
2023-10-01Not available in this setting$762.68RVU23D
2023-07-01Not available in this setting$762.68RVU23C
2023-04-01Not available in this setting$762.68RVU23B
2023-01-01Not available in this setting$762.68RVU23A
2022-10-01Not available in this setting$766.21RVU22D
2022-07-01Not available in this setting$766.21RVU22C
2022-04-01Not available in this setting$766.21RVU22B
2022-01-01Not available in this setting$766.21RVU22A
2021-10-01Not available in this setting$765.68RVU21D
2021-07-01Not available in this setting$765.68RVU21C
2021-04-01Not available in this setting$765.68RVU21B
2021-01-01Not available in this setting$765.68RVU21A
2020-10-01Not available in this setting$778.55RVU20D
2020-07-01Not available in this setting$778.55RVU20C
2020-04-01Not available in this setting$778.55RVU20B
2020-01-01Not available in this setting$778.55RVU20A
2019-10-01Not available in this setting$785.34RVU19D
2019-07-01Not available in this setting$785.34RVU19C
2019-04-01Not available in this setting$785.34RVU19B
2019-01-01Not available in this setting$785.34RVU19A
2018-10-01Not available in this setting$781.87RVU18D
2018-07-01Not available in this setting$781.87RVU18C
2018-04-01Not available in this setting$781.87RVU18B
2018-01-01Not available in this setting$781.87RVU18AR1
2017-10-01Not available in this setting$780.39RVU17D
2017-07-01Not available in this setting$780.39RVU17C
2017-04-01Not available in this setting$780.39RVU17B
2017-01-01Not available in this setting$780.39RVU17A
2016-10-01Not available in this setting$778.59RVU16D
2016-07-01Not available in this setting$778.59RVU16C
2016-04-01Not available in this setting$778.59RVU16B
2016-01-01Not available in this setting$778.59RVU16A
2015-10-01Not available in this setting$784.78RVU15D
2015-07-01Not available in this setting$784.78RVU15C
2015-04-01Not available in this setting$780.88RVU15B
2015-01-01Not available in this setting$780.88RVU15A
2014-10-01Not available in this setting$769.26RVU14D
2014-07-01Not available in this setting$769.26RVU14C
2014-04-01Not available in this setting$769.26RVU14B
2014-01-01Not available in this setting$769.26RVU14A
2013-10-01Not available in this setting$762.44RVU13D
2013-07-01Not available in this setting$762.44RVU13C
2013-04-01Not available in this setting$762.44RVU13B
2013-01-01Not available in this setting$762.44RVU13AR

Price 23415 for an earlier date of service

Where the Connecticut rate applies

Connecticut is a Medicare payment area, not a city. Our Census mapping connects it to 215 cities and communities in Connecticut. Some span more than one payment area; confirm with the service ZIP.

  • Ansonia
  • Ball Pond
  • Baltic
  • Bantam
  • Bethel
  • Bethlehem Village
  • Bigelow Corners
  • Blue Hills

Browse all communities in Connecticut

23415 billing questions

Does 23415 include acromioplasty?

Yes. The code covers coracoacromial ligament release with or without acromioplasty, so acromial reshaping performed as part of that service is included.

Can 23415 be reported with a rotator cuff repair?

The codes describe different work: ligament release and acromial work versus tendon repair. Report both only when both services were performed and the applicable coding edits permit separate reporting.

How does 23415 differ from 29826?

23415 describes the open approach. Code 29826 describes arthroscopic subacromial decompression, so the operative approach distinguishes the codes.

What documentation supports 23415?

The operative report should identify the open release of the coracoacromial ligament and describe any acromioplasty performed. A diagnosis of shoulder impingement alone does not establish that the procedure was done.

What are the assistant and co-surgeon payment rules?

CMS does not pay an assistant at surgery for this code. Co-surgeons are paid only with 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 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 23415PPRRVU2026_Oct_nonQPP.csv, line 2,200 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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