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CPT code 25240: Ulna ostectomy, partial bone removal2026 Medicare rate & RVUs

Reports removal of a limited portion of the ulna, commonly for ulnocarpal abutment or positive ulnar variance treated with a wafer procedure.

CMS RVU26DEffective Oct 1, 2026109 payment localities1.8K Medicare services in 2024

Medicare pays $410.50 for 25240 nationally in a facility.

Medicare rate · 25240

Ulna ostectomy, partial bone removal

Office or facility?

Work RVUs
5.18
Total RVUs
12.29
Global days
090

National rate · 2026

$410.50

Facility setting, before claim adjustments.

See every locality for 25240 →Billed by an NP, PA or therapist? →

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

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 25240 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

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

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

109 of 109 payment localities

25240 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$370.39
AlaskaUnavailable$495.10
ArizonaUnavailable$399.32
ArkansasUnavailable$365.41
Atlanta, GAUnavailable$421.06
Austin, TXUnavailable$418.81
Bakersfield, CAUnavailable$420.15
Baltimore area, MDUnavailable$436.13
Beaumont, TXUnavailable$389.76
Brazoria, TXUnavailable$402.63

25240 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
25240 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

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

Office or facility?

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, partial bone removal

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)0Not paid without supporting documentation.
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 · 25240

Ulna ostectomy, partial bone removal

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

25240 without 50 · national facility

$410.50

Ulna ostectomy, partial bone removal

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).

When to use modifier 50

25240 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 25240

    Ulna ostectomy, partial bone removal5.18 wRVU

    Not priced

  • 25230

    Radius resection, partial bone removal5.24 wRVU

    Not priced

  • 25390

    Bone shortening, radius or ulna10.43 wRVU

    Not priced

  • 25150

    Ulna resection, partial bone removal7.2 wRVU

    Not priced

How to choose

25230Radius resectionPartial bone removal
25230 concerns partial removal of the radius; 25240 concerns partial removal of the ulna.
25390Bone shorteningRadius or ulna
25390 represents shortening by osteotomy. Use 25240 when the documented work is partial ulna ostectomy instead.
25150Ulna resectionPartial bone removal
25150 describes distal ulna excision, while 25240 is used for a partial ulna ostectomy; match the code to the documented extent and procedure.

Codes related to 25240

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

Codes related to 25240
CodeHow it relatesNational office range
Same family
25230Radius resection, partial bone removalCorresponding partial ostectomy code for the radius rather than the ulna.No office rate
Used instead
25390Bone shortening, radius or ulnaShortening osteotomy option when the operative technique is osteotomy rather than partial ostectomy.No office rate
25150Ulna resection, partial bone removalDistal ulna excision code for a different extent of resection.No office rate

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
RVUs for 25240PPRRVU2026_Oct_nonQPP.csv, line 2,412 (RVU26D)

Open CMS sourceHow we calculate rates

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