CPT code 41000: Oral abscess drainage, floor of mouth2026 Medicare rate & RVUs in Missouri
Reports intraoral drainage of an abscess, cyst, or hematoma in the floor of the mouth, rather than a collection at another oral site.
Medicare pays $144.09–$154.09 for 41000 in the office in Missouri, from Rest of Missouri to Metropolitan St. Louis, MO. 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.
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On this page 9 sections
What 41000 covers
This procedure drains a localized collection in the floor of the mouth through an intraoral approach. The collection may be an abscess, cyst, or hematoma. Oral and maxillofacial surgeons, dentists, and other qualified physicians may perform it in an office, outpatient department, or operating room, depending on the patient’s condition and the extent of the infection or collection. The documented site and route distinguish this service from drainage involving the tongue, vestibule, or extraoral neck spaces.
Report the service when the clinician actually drains a collection at the floor of the mouth; documentation should identify the site, the nature of the collection when known, and the intraoral approach. Related postoperative visits during the 10-day global period 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 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 41000 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$144.09 to $154.09
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | $152.52 | $99.52 |
| Metropolitan St. Louis, MO | $154.09 | $100.35 |
| Rest of Missouri | $144.09 | $95.44 |
How the 41000 rate is calculated
Each of 41000’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 · 41000
RVUs × geographic indexes × conversion factor
Work1.32
1.32 RVUs× 1.000 GPCI
Practice expense3.27
3.27 RVUs× 1.000 GPCI
Malpractice0.18
0.18 RVUs× 1.000 GPCI
Adjusted RVUs
4.7700
Conversion factor
$33.4009
Medicare rate
$159.32
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 41000
41000 has a 10-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 41000
Oral abscess drainage, floor of mouth
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 010 | Minor procedure: the day of the procedure plus 10 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) | 0.10/0.80/0.10 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 41000
Oral abscess drainage, floor of mouth
10-day global period ends
Oct 11, 2026
Covers Oct 1, 2026 through Oct 11, 2026 (11 days).
Visit on Oct 31, 2026
After the global period ends: visits and procedures are billed normally.
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
41000 without 51 · national office
$159.32
Oral abscess drainage, floor of mouth
41000-51 · Second procedure: 50%
$79.66
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%).
41000 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 41005Oral drainageMouth vestibule
- Choose 41005 when the drained collection is in the tongue; choose 41000 for a collection in the floor of the mouth.
- 41006Mouth lesion drainageFloor of mouth, extraoral
- 41006 identifies drainage in the vestibule of the mouth. The floor of the mouth is the site for 41000.
- 41007Mouth lesion drainageFloor of mouth, intraoral
- 41007 is for a collection in the submandibular space approached externally; 41000 is for intraoral drainage from the floor of the mouth.
41000 billing questions
How is this distinguished from drainage of a tongue abscess?
Use 41000 for a collection in the floor of the mouth. A collection centered in the tongue is reported with 41005.
Does the intraoral approach matter?
Yes. This code describes drainage from the floor of the mouth through an intraoral approach; document both the site and route.
Can modifier 50 be used for collections on both sides?
No. The CMS bilateral adjustment does not apply, and modifier 50 is inappropriate for this code.
Are postoperative visits separately reported during the global period?
Related postoperative visits during the 10-day global period are included in the procedure.
Can an assistant or co-surgeon be billed?
Medicare does not pay an assistant at surgery for this service. Co-surgeon and team-surgery billing are not permitted.
What happens if other procedures are performed in the same session?
The highest-valued procedure is paid in full, and the 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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