CPT code 41599: Unlisted oral surgery, tongue or floor of mouth2026 Medicare rate & RVUs in Maryland
Reports an unlisted operation involving the tongue or floor of the mouth when no listed CPT procedure code describes the work.
CMS doesn’t publish an office rate for 41599 in Maryland.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What 41599 covers
Code 41599 identifies an operation on the tongue or floor of the mouth when no listed CPT procedure code describes the work. It is not a substitute for a defined procedure code that matches the operation. Nearby listed procedures address tongue-to-lip surgery, tongue suspension, reconstruction of a tongue fold, and tongue-base volume reduction; select one of those when it accurately represents the procedure. For an unlisted operation, the claim should be supported by a clear account of the anatomy treated and work performed so the service can be evaluated.
Medicare assigns physician fee schedule status C: CMS publishes no national payment, and the Medicare Administrative Contractor sets payment claim by claim. The Medicare contractor also sets the global period. When multiple procedures are performed in the same session, the standard multiple procedure reduction applies: the highest-valued procedure is paid in full, and other procedures are reduced.
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 41599 pays more and less in Maryland
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Baltimore area, MD | Unavailable | Unavailable |
| Rest of Maryland | Unavailable | Unavailable |
| Washington, DC area | Unavailable | Unavailable |
How the 41599 rate is calculated
Each of 41599’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 · 41599
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.00
0.00 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
0.0000
Conversion factor
$33.4009
Medicare rate
$0.00
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 41599
The CMS indicators that decide how 41599 is paid alongside other services.
CMS payment indicators · 41599
Unlisted oral surgery, tongue or floor of mouth
| Rule | CMS value | What it means |
|---|---|---|
| Global period | YYY | The Medicare contractor sets the global period. |
| 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) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 1 | Permitted with supporting documentation. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
41599 without 51 · national facility
$0.00
Unlisted oral surgery, tongue or floor of mouth
41599-51 · Second procedure: 50%
$0.00
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%).
41599 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 41510Tongue adhesionTongue-to-lip fixation
- 41510 describes tongue-to-lip surgery. Choose 41599 only when that code does not describe the operation performed.
- 41512Tongue suspensionPermanent suture technique
- 41512 describes tongue suspension. Use 41599 when no listed code, including 41512, describes the operation.
- 41520FrenuloplastyFor restricted tongue movement
- 41520 describes reconstruction of a tongue fold. Use 41599 when the work is a different operation not represented by a listed code.
- 41530Tongue base reductionRadiofrequency, one or more areas
- 41530 describes tongue-base volume reduction. It is not the general code for every operation involving the tongue or floor of the mouth.
41599 billing questions
When should 41599 be used instead of a listed tongue procedure code?
Use 41599 when no listed procedure code describes the operation on the tongue or floor of the mouth. If a defined code accurately represents the work, use that code instead.
What documentation supports a claim for 41599?
Describe the anatomy treated and the work performed so the unlisted service can be evaluated.
How does Medicare price 41599?
Its physician fee schedule status is C: CMS publishes no national payment, and the Medicare Administrative Contractor sets payment for each claim.
Who sets the global period for 41599?
The Medicare contractor sets the global period.
How are multiple procedures in the same session treated?
The standard multiple procedure reduction applies. The highest-valued procedure is paid in full, and other procedures are reduced.
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
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