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Billing code 25370: Forearm osteotomyMedicare rate & RVUs

Corrective surgery on the radius or ulna realigns one forearm bone to address a deformity, with code selection guided by the bone treated.

CMS RVU26DEffective Oct 1, 2026109 payment localities

Medicare pays $940.57 for 25370 nationally in a facility.

Medicare rate · 25370

Forearm osteotomy

Work RVUs
13.75
Total RVUs
28.16
Global days
090

National rate · 2026

$940.57

Facility setting, before claim adjustments.

See every locality for 25370 →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.

On this page 10 sections
  1. Medicare rate
  2. What 25370 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 25370 covers

This operation changes the alignment of the radius or ulna to correct a bony deformity. An orthopedic or hand surgeon typically performs it in an operating room, using the operative approach and stabilization appropriate to the patient’s anatomy and surgical plan. The code is for correction involving one of the two forearm bones, rather than both bones together.

The operative report should identify the bone and side treated, the deformity or other indication, and the corrective work performed. Choose a different code when the procedure addresses both the radius and ulna or has a specifically described goal such as shortening. Medicare assigns a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. For multiple procedures 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%. An assistant at surgery may be paid; co-surgeons and team surgery are 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 25370 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

25370 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$850.17
Alaska*Unavailable$1,151.18
ArizonaUnavailable$914.59
ArkansasUnavailable$839.04
AtlantaUnavailable$967.75
AustinUnavailable$952.57
BakersfieldUnavailable$947.84
Baltimore/Surr. CntysUnavailable$999.10
BeaumontUnavailable$899.11
BrazoriaUnavailable$919.26

25370 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
25370 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 25370 rate is calculated

Each of 25370’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 · 25370

RVUs × geographic indexes × conversion factor

Work13.75

13.75 RVUs× 1.000 GPCI

Practice expense11.48

11.48 RVUs× 1.000 GPCI

Malpractice2.93

2.93 RVUs× 1.000 GPCI

Adjusted RVUs

28.1600

Conversion factor

$33.4009

Medicare rate

$940.57

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

Payment rules and modifiers for 25370

25370 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 25370

Forearm osteotomy

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)2Paid.
Co-surgeons (62)0Not permitted.
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 · 25370

Forearm osteotomy

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

25370 without 50 · national facility

$940.57

Forearm osteotomy

25370-50 · Bilateral: 150%

$1,410.86

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

25370 compared with similar codes

Compare codes · National

5 codes, side by side

  • 25370

    Forearm osteotomy13.75 wRVU

    Not priced

  • 25365

    Forearm osteotomy12.59 wRVU

    Not priced

  • 25350

    Radius osteotomy8.86 wRVU

    Not priced

  • 25360

    Ulnar osteotomy8.52 wRVU

    Not priced

  • 25390

    Bone shortening10.43 wRVU

    Not priced

How to choose

25365Forearm osteotomy
This code addresses one forearm bone; 25365 is the option for corrective work involving both the radius and ulna.
25350Radius osteotomy
25350 is a radius-only revision option. Select according to the specific procedure performed and the applicable code descriptor.
25360Ulnar osteotomy
25360 is an ulna-only revision option. Use the code that matches the specific procedure documented for the ulna.
25390Bone shortening
25390 describes shortening the radius or ulna. This code is for corrective revision rather than a specifically described shortening procedure.

Codes related to 25370

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

Codes related to 25370
CodeHow it relatesNational office range
Same family
25350Radius osteotomyA radius-only revision option within the forearm osteotomy family.No office rate
25360Ulnar osteotomyAn ulna-only revision option within the forearm osteotomy family.No office rate
25365Forearm osteotomyFor revision involving both the radius and ulna.No office rate
Used instead
25390Bone shorteningConsider when the operative goal is shortening the radius or ulna.No office rate

25370 billing questions

How do I distinguish this code from a code for both forearm bones?

This code covers corrective work on the radius or the ulna. When the operative work corrects both bones, consider the code for the radius and ulna together.

What documentation supports reporting this code?

The operative report should identify the bone and side, describe the deformity or indication, and document the corrective procedure performed.

How is bilateral surgery reported?

For bilateral procedures, modifier 50 is paid at 150% under the CMS facts for this code.

How does the multiple procedure rule affect payment?

When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are paid at 50%.

Can an assistant surgeon be reported?

CMS indicates that an assistant at surgery may be paid for this procedure. Co-surgeons and team surgery are not permitted.

What postoperative care is included?

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

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 25370PPRRVU2026_Oct_nonQPP.csv, line 2,442 (RVU26D)

Open CMS sourceHow we calculate rates

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