Billing code 27637: Bone lesion graftingMedicare rate & RVUs in Ohio
Reports curettage or excision of a benign tibial or fibular bone lesion when the resulting cavity is filled with donor bone graft.
CMS doesn’t publish an office rate for 27637 in Ohio.
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 27637 covers
This operation treats a cyst or benign tumor in the tibia or fibula by opening the involved bone, removing or scraping out the lesion, and filling the resulting defect with donor bone (allograft). Orthopedic surgeons typically perform it in an operating room when curettage leaves a cavity to be grafted. The operative record should identify the bone and side, lesion, removal technique, and use of allograft.
Choose this code when the lesion is treated by curettage or excision with allograft; 27635 describes the corresponding procedure without graft, while 27638 is used when autograft is used. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. 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%. Assistant-at-surgery payment may be available; 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.
27637 in Ohio
| Payment locality | Office | Facility |
|---|---|---|
| Ohio | Unavailable | $681.74 |
How the 27637 rate is calculated
Each of 27637’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 · 27637
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 10.05Practice expense 9.14Malpractice 2.00
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 27637
27637 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 27637
Bone lesion grafting
| 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 · 27637
Bone lesion grafting
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
27637 without 50 · national facility
$707.77
Bone lesion grafting
27637-50 · Bilateral: 150%
$1,061.66
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).
27637 compared with similar codes
Compare codes
27637 vs 27635 vs 27638 vs 27645 vs 27646: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 27635Bone lesion removal
- Use 27637 when allograft fills the cavity after lesion removal; 27635 is the corresponding procedure without graft.
- 27638Bone lesion surgery
- Both codes cover curettage or excision of a tibial or fibular bone lesion with grafting. Choose 27638 when the graft is autograft rather than allograft.
- 27645Tibial tumor resection
- 27645 describes resection of a tibial tumor. 27637 is for curettage or excision of a benign lesion with allograft.
- 27646Bone tumor resection
- 27646 describes resection of a fibular tumor. 27637 is for curettage or excision of a benign lesion with allograft.
27637 billing questions
How does 27637 differ from 27635?
27637 includes filling the lesion cavity with allograft. Use 27635 for the corresponding curettage or excision without graft.
How does 27637 differ from 27638?
The graft source distinguishes them: 27637 is for allograft, while 27638 is for autograft, including obtaining the graft.
Is the allograft placement part of this code?
Yes. The code describes treatment of the tibial or fibular lesion with allograft; do not separately report 27635 for the same lesion removal.
What should the operative note support?
Document the lesion, affected bone and side, curettage or excision, and use of allograft to fill the defect.
How is bilateral reporting handled?
When the procedure is performed bilaterally and reported with modifier 50, CMS pays 150%.
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
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