Billing code 28737: Foot bone revisionMedicare rate & RVUs in Illinois
Reports operative revision of foot bones to correct a problem involving a previously treated bone, rather than a primary foot-bone fusion.
CMS doesn’t publish an office rate for 28737 in Illinois.
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 28737 covers
billing code 28737 describes an operation to revise foot bones. It is generally performed by an orthopedic foot and ankle surgeon or podiatric surgeon in an operating room when prior treatment of a foot bone requires operative correction. The code is selected for the revision service itself; the specific bone, prior procedure, problem being corrected, and work performed should be clear in the operative report. Do not select it solely because the patient has had earlier foot surgery if the current operation is a different, separately defined procedure.
Medicare assigns a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included. 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%. Assistant-at-surgery services may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted. Record the revision indication and operative details, including the bone addressed and how the procedure corrected the problem.
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 28737 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Chicago | Unavailable | $693.56 |
| East St. Louis | Unavailable | $659.08 |
| Rest Of Illinois | Unavailable | $637.30 |
| Suburban Chicago | Unavailable | $675.17 |
How the 28737 rate is calculated
Each of 28737’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 · 28737
RVUs × geographic indexes × conversion factor
Work10.75
10.75 RVUs× 1.000 GPCI
Practice expense6.83
6.83 RVUs× 1.000 GPCI
Malpractice1.34
1.34 RVUs× 1.000 GPCI
Adjusted RVUs
18.9200
Conversion factor
$33.4009
Medicare rate
$631.95
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 28737
28737 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 28737
Foot bone revision
| 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 · 28737
Foot bone revision
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
28737 without 50 · national facility
$631.95
Foot bone revision
28737-50 · Bilateral: 150%
$947.93
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).
28737 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 28730Midfoot fusion
- 28730 describes a multiple or transverse midfoot fusion. Choose 28737 when the documented operation is revision of foot bones, not that defined fusion service.
- 28735Midfoot fusion
- 28735 describes midfoot fusion with an osteotomy. The operative report must support that fusion service; revision of previously treated foot bones is the distinction for 28737.
- 28740Foot fusion
- 28740 is for fusion of a single midfoot joint. It is not interchangeable with 28737 merely because the revision operation involves a joint.
28737 billing questions
How do I distinguish 28737 from a foot-bone arthrodesis code?
Use 28737 for the revision service when the operation revises foot bones. When the operative service is a defined fusion, select the applicable arthrodesis code, such as one for multiple or single midfoot joints.
What documentation supports reporting 28737?
The operative report should identify the bone or bones revised, the condition prompting revision, relevant prior treatment, and the corrective work performed.
Is postoperative care included in 28737?
Yes. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
How are bilateral and same-session procedures handled?
Bilateral reporting with modifier 50 is paid at 150%. For multiple procedures in one session, the highest-valued procedure is paid in full and the others are subject to the standard 50% reduction.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery services may be paid. Co-surgeons are paid only with supporting documentation; team surgery is not permitted.
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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