CPT code 25240: Ulna ostectomy2026 Medicare rate & RVUs in Georgia
Reports removal of a limited portion of the ulna, commonly for ulnocarpal abutment or positive ulnar variance treated with a wafer procedure.
CMS doesn’t publish an office rate for 25240 in Georgia.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 25240 covers
This service removes a limited amount of ulnar bone, often near the wrist, to address painful contact between the ulna and carpal bones or to correct positive ulnar variance. A hand or orthopedic surgeon may perform the procedure as an open operation or, for a wafer resection, arthroscopically. The operative report should identify the treated side, the portion and amount of bone removed, the technique, and the clinical reason for resection.
Select this code when the documented procedure is a partial ulna ostectomy; distinguish it from removal of the radius, carpal bones, or a shortening osteotomy. The CMS global period includes 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 others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery and co-surgeon payment require supporting documentation, with medical necessity documented for an assistant. 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 25240 pays more and less in Georgia
| Payment locality | Office | Facility |
|---|---|---|
| Atlanta | Unavailable | $421.06 |
| Rest Of Georgia | Unavailable | $394.97 |
How the 25240 rate is calculated
Each of 25240’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 · 25240
RVUs × geographic indexes × conversion factor
Work5.18
5.18 RVUs× 1.000 GPCI
Practice expense6.10
6.10 RVUs× 1.000 GPCI
Malpractice1.01
1.01 RVUs× 1.000 GPCI
Adjusted RVUs
12.2900
Conversion factor
$33.4009
Medicare rate
$410.50
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 25240
25240 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 25240
Ulna ostectomy
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.69/0.21 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 25240
Ulna ostectomy
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.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
25240 without 50 · national facility
$410.50
Ulna ostectomy
25240-50 · Bilateral: 150%
$615.75
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).
25240 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 25230Radius resection
- 25230 concerns partial removal of the radius; 25240 concerns partial removal of the ulna.
- 25390Bone shortening
- 25390 represents shortening by osteotomy. Use 25240 when the documented work is partial ulna ostectomy instead.
- 25150Ulna resection
- 25150 describes distal ulna excision, while 25240 is used for a partial ulna ostectomy; match the code to the documented extent and procedure.
25240 billing questions
How does this differ from a ulnar shortening osteotomy?
This code describes partial removal of ulna. A shortening osteotomy uses an osteotomy approach; use the code that matches the documented technique, such as 25390 when its requirements are met.
When would 25230 be reported instead?
25230 describes partial removal of the radius. Choose based on the bone actually treated, as documented in the operative report.
What documentation supports reporting 25240?
Document the indication, side, ulnar location, amount or segment removed, and operative technique. The note should make clear that the work was a partial ulna ostectomy.
How is bilateral surgery reported?
CMS lists bilateral reporting with modifier 50, paid at 150%. The operative record should support treatment of both sides.
How does payment work when other procedures are performed in the same session?
Under the standard multiple-procedure reduction, the highest-valued procedure is paid in full and the other procedures are paid at 50%.
What surgical-assistance documentation is needed?
Assistant-at-surgery payment requires documentation of medical necessity. Co-surgeon payment also requires supporting documentation.
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
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