CPT code 27455: Knee realignment2026 Medicare rate & RVUs in Oklahoma
Reports proximal tibial osteotomy to correct knee alignment, including associated fibular work when part of the documented procedure.
CMS doesn’t publish an office rate for 27455 in Oklahoma.
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 27455 covers
This service involves surgically cutting and repositioning the upper tibia to correct a knee alignment problem, such as varus or valgus deformity. The procedure may include fibular osteotomy or excision when needed for the correction. Orthopedic surgeons typically perform it in a hospital or ambulatory surgical setting; the operative report should identify the bone treated, the deformity, the osteotomy and any associated fibular work.
Choose this code when the documented operation matches the proximal tibial osteotomy service, rather than a correction performed on the femur or a different knee procedure. The report should support the indication, operative site, correction performed and any fixation. Medicare assigns a 90-day global period, including the day-before preoperative visit and related postoperative care for 90 days. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment may be available; co-surgeons require 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.
27455 in Oklahoma
| Payment locality | Office | Facility |
|---|---|---|
| Oklahoma | Unavailable | $833.11 |
How the 27455 rate is calculated
Each of 27455’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 · 27455
RVUs × geographic indexes × conversion factor
Work13.03
13.03 RVUs× 1.000 GPCI
Practice expense10.93
10.93 RVUs× 1.000 GPCI
Malpractice2.77
2.77 RVUs× 1.000 GPCI
Adjusted RVUs
26.7300
Conversion factor
$33.4009
Medicare rate
$892.81
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 27455
27455 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 27455
Knee realignment
| 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 · 27455
Knee realignment
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
27455 without 50 · national facility
$892.81
Knee realignment
27455-50 · Bilateral: 150%
$1,339.22
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).
27455 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 27457Knee realignment
- Both codes concern proximal tibial osteotomy. Use the complete descriptor and operative report to identify whether the service includes the realignment element associated with 27457.
- 27454Femoral osteotomy
- This code concerns realignment of the thigh bone; 27455 concerns a proximal tibial osteotomy. The operative report should identify which bone was treated.
- 27447Total knee replacement
- 27447 reports total knee arthroplasty, not a proximal tibial osteotomy. The operative report distinguishes joint replacement from bone realignment.
27455 billing questions
How is 27455 distinguished from 27457?
Both relate to proximal tibial osteotomy. Compare the complete code descriptors with the operative report, especially whether the documented service includes the realignment element associated with 27457.
Can associated fibular work be reported separately?
Fibular osteotomy or excision may be part of the proximal tibial correction represented by this service. The operative report should show whether it was performed as part of that procedure.
What does the 90-day global period include?
It includes the day-before preoperative visit and 90 days of related postoperative care.
How is the code handled when another procedure is performed in the same session?
The highest-valued procedure is paid in full, and other procedures are subject to the standard multiple-procedure reduction.
How should bilateral procedures be reported?
Use modifier 50 for a bilateral procedure; CMS pays the service at 150%.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be available. Co-surgeons are paid only when supporting documentation is provided.
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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