Billing code 24935: Amputation revisionMedicare rate & RVUs in Massachusetts
Revision of an existing upper-arm amputation reshapes the residual limb when surgical correction is needed for problems such as a prominent bone or poor prosthetic fit.
CMS doesn’t publish an office rate for 24935 in Massachusetts.
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 24935 covers
This operation revises an existing upper-arm amputation stump rather than removing the arm for the first time. The surgeon may reshape the residual limb’s bone or soft tissue to address a problem such as a painful prominence, impaired healing, or difficulty fitting a prosthesis. Orthopedic and other surgeons who manage limb loss may perform the procedure in an operating room, commonly in a hospital or ambulatory surgical setting.
Report the code when the operative service is a revision of an existing upper-arm amputation; document the prior amputation, the reason for revision, and the work performed on the residual limb. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. For multiple procedures in the same session, the highest-valued procedure is paid in full and other procedures are paid at 50%. For bilateral reporting with modifier 50, payment is at 150%. Assistant-at-surgery payment requires documentation of medical necessity; 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 24935 pays more and less in Massachusetts
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Boston | Unavailable | $1,241.34 |
| Rest Of Massachusetts | Unavailable | $1,148.60 |
How the 24935 rate is calculated
Each of 24935’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 · 24935
RVUs × geographic indexes × conversion factor
Work16.04
16.04 RVUs× 1.000 GPCI
Practice expense14.60
14.60 RVUs× 1.000 GPCI
Malpractice3.41
3.41 RVUs× 1.000 GPCI
Adjusted RVUs
34.0500
Conversion factor
$33.4009
Medicare rate
$1,137.30
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 24935
24935 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 24935
Amputation 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) | 0 | Not paid without supporting documentation. |
| 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 · 24935
Amputation 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
24935 without 50 · national facility
$1,137.30
Amputation revision
24935-50 · Bilateral: 150%
$1,705.95
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).
24935 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 24900Upper arm amputation
- Use 24900 for the upper-arm amputation itself. Use 24935 when the patient already has an upper-arm amputation and the operation revises that residual limb.
- 24925Arm amputation
- Both relate to surgery after upper-arm amputation, but 24935 identifies revision of an existing stump. Choose 24925 only when its specific service matches the operative report.
- 24940Revision of upper arm
- This is a related upper-arm revision code. Compare its full current descriptor with the documented procedure before choosing between it and 24935.
24935 billing questions
How does this differ from an initial upper-arm amputation?
This code is for revising an existing upper-arm amputation stump. An initial amputation, rather than correction of a prior stump, points to an amputation code such as 24900.
What documentation supports reporting this revision?
Document the prior upper-arm amputation, the clinical problem prompting surgery, and the specific revision work performed on the residual limb.
Are related postoperative visits separately reported?
Related postoperative care during the 90-day global period is included, along with the day-before preoperative visit.
How is the code handled when other procedures are performed in the same session?
The highest-valued procedure is paid in full, and other procedures are paid at 50% under the standard multiple procedure reduction.
Can modifier 50 be used for bilateral revisions?
Yes. CMS pays bilateral reporting with modifier 50 at 150%.
When is an assistant at surgery payable?
Payment for an assistant at surgery requires documentation of medical necessity. Co-surgeon and team-surgery payment 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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