Billing code 24400: Humerus osteotomyMedicare rate & RVUs in Texas
Reports surgical cutting and realignment of the humerus to correct a bone deformity, with internal fixation used when needed.
CMS doesn’t publish an office rate for 24400 in Texas.
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 24400 covers
An orthopedic surgeon cuts the humerus and changes its alignment to correct a deformity, such as a healed fracture that has left the bone malaligned. Internal fixation may be used to hold the corrected bone position, but it is not required for this code. The service is generally performed in an operating room, including a hospital or ambulatory surgery center, rather than as an office procedure.
Report the code for the humeral osteotomy itself, whether or not fixation is used. The operative report should identify the bone and deformity, describe the osteotomy and correction, and document any fixation. The code has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, 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%. An assistant at surgery may be paid; 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 24400 pays more and less in Texas
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
8 of 8 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Austin | Unavailable | $785.73 |
| Beaumont | Unavailable | $739.86 |
| Brazoria | Unavailable | $757.71 |
| Dallas | Unavailable | $765.81 |
| Fort Worth | Unavailable | $763.55 |
| Galveston | Unavailable | $762.12 |
| Houston | Unavailable | $804.95 |
| Rest Of Texas | Unavailable | $750.61 |
How the 24400 rate is calculated
Each of 24400’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 · 24400
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 11.05Practice expense 9.81Malpractice 2.34
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 24400
24400 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 24400
Humerus osteotomy
| 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) | 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 · 24400
Humerus 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.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
24400 without 50 · national facility
$774.90
Humerus osteotomy
24400-50 · Bilateral: 150%
$1,162.35
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).
24400 compared with similar codes
Compare codes
24400 vs 24410 vs 24420 vs 24430 vs 24435: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 24410Humeral osteotomy
- 24410 is for multiple humeral osteotomies with an intramedullary rod. Choose 24400 when the performed osteotomy does not meet that more specific description.
- 24420Humerus osteoplasty
- 24420 describes humeral osteoplasty, including procedures such as lengthening or shortening. This code is for cutting and realigning the humerus to correct a deformity.
- 24430Humerus repair
- 24430 is for repair of humeral nonunion or malunion without graft. Choose based on whether the operation is a nonunion or malunion repair rather than a corrective osteotomy.
- 24435Humerus repair
- 24435 is for repair of humeral nonunion or malunion with graft. It differs from this code by the repair service and graft use.
24400 billing questions
When should this code be chosen over 24410?
Use 24400 for a humeral osteotomy that does not meet the specific multiple-osteotomy and intramedullary-rod description of 24410. The operative report should support the actual number and type of osteotomies and fixation method.
Does internal fixation have to be used?
No. The code covers the osteotomy whether or not internal fixation is used.
Is related postoperative care separately reported?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. The operative report and follow-up documentation should distinguish care related to the surgery from any separately reportable service.
How is bilateral surgery handled?
For a bilateral procedure reported with modifier 50, CMS pays 150%. Document the procedure on both humeri.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation, and team surgery is not permitted.
What happens when another procedure is performed in the same session?
The highest-valued procedure is paid in full, while other procedures are subject to the standard 50% multiple-procedure reduction.
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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