Billing code 25393: Forearm lengtheningMedicare rate & RVUs in Oregon
Surgical lengthening of both the radius and ulna in one forearm, reported when the operative treatment addresses shortening or a length discrepancy in both bones.
CMS doesn’t publish an office rate for 25393 in Oregon.
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 25393 covers
This procedure surgically lengthens both bones of the forearm. An orthopedic or hand surgeon may perform it to address a forearm that is shortened or has a length discrepancy involving both the radius and ulna, such as after a growth disturbance or injury. The operation is generally performed in a hospital operating room, with the operative plan directed at correcting the length of both bones.
Report this code when the operative documentation supports lengthening both the radius and ulna; lengthening only one bone points to a different code in the family. Document the indication, side, and work performed on each bone. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. For same-session procedures, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple procedure reduction. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment may be made; 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 25393 pays more and less in Oregon
| Payment locality | Office | Facility |
|---|---|---|
| Portland | Unavailable | $1,054.35 |
| Rest Of Oregon | Unavailable | $997.45 |
How the 25393 rate is calculated
Each of 25393’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 · 25393
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 16.15Practice expense 11.34Malpractice 3.44
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 25393
25393 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 25393
Forearm lengthening
| 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) | 2 | Paid. |
| Co-surgeons (62) | 0 | Not permitted. |
| 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 · 25393
Forearm lengthening
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
25393 without 50 · national facility
$1,033.09
Forearm lengthening
25393-50 · Bilateral: 150%
$1,549.64
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).
25393 compared with similar codes
Compare codes
25393 vs 25391 vs 25392 vs 25390: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 25391Bone lengthening
- Choose 25391 when only the radius or only the ulna is lengthened. This code is for lengthening both bones.
- 25392Forearm osteotomy
- Both codes address both forearm bones, but 25392 is for shortening and this code is for lengthening.
- 25390Bone shortening
- 25390 shortens one forearm bone; this code lengthens both the radius and ulna.
25393 billing questions
When should this be selected instead of 25391?
Use this code when the surgeon lengthens both the radius and ulna. Code 25391 describes lengthening one of those bones.
Can the procedure be reported bilaterally?
Yes. CMS identifies it as a bilateral procedure; modifier 50 is paid at 150%.
What documentation supports this code?
The operative report should identify the indication and side, and establish that the surgeon lengthened both the radius and ulna.
How does the global period affect postoperative reporting?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
How are other procedures in the same session paid?
Under the standard multiple procedure reduction, the highest-valued procedure is paid in full and other procedures are paid at 50%.
May an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be made. Co-surgeons and team surgery are not permitted for this code.
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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