CPT code 23130: Acromioplasty, partial acromion resection2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 23130 in California.

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

What 23130 covers

The surgeon removes or reshapes part of the acromion, commonly its prominent undersurface, to relieve narrowing in the subacromial space. Orthopedic surgeons typically perform this operation in a hospital or ambulatory surgical setting for a patient with symptomatic shoulder impingement. It may be performed with a rotator cuff repair when the operative plan includes both procedures. The work may include release of the coracoacromial ligament.

Report 23130 when the operative note documents partial acromial resection or reshaping, not merely inspection of the shoulder or treatment of a separate structure. Document the approach, the portion of acromion treated, and the clinical reason for decompression. Medicare assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Bilateral reporting with modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery; 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.

Where 23130 pays more and less in California

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

29 of 29 payment localities

How the 23130 rate is calculated

Each of 23130’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.

Payment rules and modifiers for 23130

23130 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

23130 compared with similar codes

How to choose

29826Shoulder decompressionSubacromial space

Use 23130 for open partial acromial resection. Code 29826 describes arthroscopic subacromial decompression and is reported as an add-on to an eligible primary shoulder arthroscopy code.

23120Clavicle resectionPartial claviculectomy

23120 removes part of the clavicle at the acromioclavicular joint; 23130 reshapes or removes part of the acromion for subacromial decompression.

23412Rotator cuff repairChronic tear, open repair

23412 reports repair of a chronic rotator cuff tear. It does not describe acromial resection, which may be separately reported when independently performed and documented.

Codes related to 23130

Related codes aren’t interchangeable: bill the code that matches the service performed.

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

Open CMS sourceHow we calculate rates