Billing code 21032: Maxillary exostosisMedicare rate & RVUs in Massachusetts
Reports surgical removal of a bony prominence of the maxilla, such as a palatal torus, when excision is performed.
Medicare pays $396.41–$437.20 for 21032 in the office in Massachusetts, from Rest Of Massachusetts to Metropolitan Boston. Which amount applies depends on the service address.
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 21032 covers
This procedure removes a localized bony prominence from the upper jaw. A typical example is excision of a palatal torus that interferes with a denture or is repeatedly traumatized. An oral and maxillofacial surgeon or another qualified surgeon may perform it in an office-based surgical setting or a facility, using an incision to expose and remove the excess bone.
Report 21032 when the treated finding is an exostosis of the maxilla; document its location, the diagnosis, and the work performed. The service has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate for this code. Medicare does not pay an assistant at surgery, and co-surgeon and team-surgery billing 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 21032 pays more and less in Massachusetts
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Boston | $437.20 | $270.50 |
| Rest Of Massachusetts | $396.41 | $249.40 |
How the 21032 rate is calculated
Each of 21032’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 · 21032
RVUs × geographic indexes × conversion factor
Work3.26
3.26 RVUs× 1.000 GPCI
Practice expense7.80
7.80 RVUs× 1.000 GPCI
Malpractice0.43
0.43 RVUs× 1.000 GPCI
Adjusted RVUs
11.4900
Conversion factor
$33.4009
Medicare rate
$383.78
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 21032
21032 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 21032
Maxillary exostosis
| 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) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| 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 · 21032
Maxillary exostosis
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 51 · payment effect
With and without the modifier
21032 without 51 · national office
$383.78
Maxillary exostosis
21032-51 · Second procedure: 50%
$191.89
When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).
21032 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 21031Exostosis removal
- The distinguishing factor is the bone involved: 21032 describes maxillary exostosis removal; 21031 describes mandibular exostosis removal.
- 21029Bone contouring
- Use 21032 for excision of a maxillary exostosis. 21029 describes contouring a facial bone lesion.
- 21030Bone lesion excision
- Use 21030 when excising a benign tumor of the maxilla or zygoma; 21032 is for removal of a maxillary exostosis.
- 21026Facial bone excision
- 21026 describes excision of facial bone generally. 21032 specifically identifies removal of a maxillary exostosis.
21032 billing questions
How is 21032 different from 21031?
21032 is for an exostosis of the maxilla, including a palatal torus. 21031 is for an exostosis of the mandible.
Can modifier 50 be used for exostoses on both sides?
No. CMS identifies bilateral adjustment as inappropriate for this code. Document the treated maxillary site or sites and report the service according to the applicable coding rules.
What documentation supports 21032?
Document that the bony prominence is in the maxilla, its clinical diagnosis and location, and the excision performed. The record should distinguish an exostosis from a tumor or another bone lesion.
Are related postoperative visits included?
Yes. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
Can an assistant or co-surgeon be billed?
Medicare does not pay an assistant at surgery for 21032. Co-surgeon and team-surgery billing are not permitted.
What happens 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.
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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