Billing code 41800: Gum drainageMedicare rate & RVUs
Reports incision and drainage of a localized collection in gum or dentoalveolar tissue, such as a gingival abscess treated by an oral surgeon.
Medicare pays $383.44 for 41800 nationally in the office and $189.05 in a hospital or facility. Local office rates run $332.23–$531.31.
Medicare rate · 41800
Gum drainage
Swap in your local Medicare rate.
- Work RVUs
- 1.24
- Total RVUs
- 11.48
- Global days
- 010
National rate · 2026
$383.44
Office setting, before claim adjustments.
See every locality for 41800 → · Billed by an NP, PA or therapist? →
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 10 sections
What 41800 covers
This service involves opening and draining a localized collection, such as pus from a gingival abscess involving dentoalveolar tissue. An oral and maxillofacial surgeon or another physician qualified to treat oral infections may perform it in an office or facility. The work is drainage of the collection, not removal of a foreign body or excision of a gum lesion.
Report the service when the record supports a localized collection and documents its oral site and the drainage performed. The procedure has a 10-day global period, so related postoperative visits during that period are included. When other 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. Medicare does not pay an assistant at surgery for this service, and 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 41800 pays more and less
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
109 payment localities
$332.23 to $531.31
109 of 109 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Alabama | $338.01 | $167.91 |
| Alaska* | $421.92 | $214.89 |
| Arizona | $371.86 | $183.49 |
| Arkansas | $332.23 | $165.25 |
| Atlanta | $390.65 | $193.14 |
| Austin | $401.87 | $196.20 |
| Bakersfield | $412.83 | $199.78 |
| Baltimore/Surr. Cntys | $410.50 | $201.91 |
| Beaumont | $352.83 | $175.93 |
| Brazoria | $378.86 | $186.22 |
| Chicago | $396.65 | $201.28 |
| Chico | $412.12 | $199.06 |
| Colorado | $403.37 | $196.54 |
| Connecticut | $411.76 | $202.40 |
| Dallas | $381.25 | $187.63 |
| Dc + Md/Va Suburbs | $445.99 | $217.00 |
| Delaware | $378.77 | $186.71 |
| Detroit | $377.73 | $190.14 |
| East St. Louis | $365.58 | $186.74 |
| El Centro | $412.16 | $199.11 |
| Fort Lauderdale | $394.79 | $197.87 |
| Fort Worth | $378.03 | $186.36 |
| Fresno | $412.12 | $199.06 |
| Galveston | $379.95 | $186.91 |
| Hanford-Corcoran | $412.12 | $199.06 |
| Hawaii, Guam | $425.45 | $204.43 |
| Houston | $384.71 | $191.67 |
| Idaho | $352.20 | $173.36 |
| Indiana | $354.64 | $174.44 |
| Iowa | $349.87 | $172.00 |
| Kansas | $347.13 | $171.40 |
| Kentucky | $345.70 | $172.89 |
| Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) | $443.22 | $213.26 |
| Madera | $412.12 | $199.06 |
| Manhattan | $445.18 | $219.30 |
| Merced | $412.12 | $199.06 |
| Metropolitan Boston | $448.85 | $216.75 |
| Metropolitan Kansas City | $362.91 | $180.37 |
| Metropolitan Philadelphia | $399.53 | $197.17 |
| Metropolitan St. Louis | $367.46 | $182.40 |
| Miami | $410.39 | $208.02 |
| Minnesota | $387.00 | $186.96 |
| Mississippi | $334.84 | $167.47 |
| Modesto | $412.12 | $199.06 |
| Montana** | $383.42 | $189.03 |
| Napa | $487.78 | $231.57 |
| Nebraska | $352.37 | $172.95 |
| Nevada** | $382.33 | $187.74 |
| New Hampshire | $396.02 | $193.66 |
| New Mexico | $357.52 | $179.26 |
| New Orleans | $364.96 | $182.03 |
| North Carolina | $357.97 | $176.60 |
| North Dakota** | $378.28 | $183.89 |
| Northern Nj | $439.98 | $214.48 |
| Nyc Suburbs/Long Island | $456.54 | $225.40 |
| Ohio | $354.51 | $177.03 |
| Oklahoma | $345.84 | $172.25 |
| Oxnard-Thousand Oaks-Ventura | $442.00 | $212.22 |
| Portland | $418.88 | $202.91 |
| Poughkpsie/N Nyc Suburbs | $418.80 | $205.94 |
| Puerto Rico | $386.98 | $190.45 |
| Queens | $450.60 | $220.83 |
| Redding | $412.12 | $199.06 |
| Rest Of California | $412.12 | $199.06 |
| Rest Of Florida | $373.14 | $187.30 |
| Rest Of Georgia | $349.11 | $175.71 |
| Rest Of Illinois | $359.33 | $181.85 |
| Rest Of Louisiana | $344.74 | $172.71 |
| Rest Of Maine | $353.49 | $174.65 |
| Rest Of Maryland | $387.14 | $190.42 |
| Rest Of Massachusetts | $400.01 | $195.31 |
| Rest Of Michigan | $355.56 | $178.08 |
| Rest Of Missouri | $337.22 | $169.65 |
| Rest Of New Jersey | $416.61 | $204.33 |
| Rest Of New York | $364.20 | $179.52 |
| Rest Of Oregon | $379.53 | $185.91 |
| Rest Of Pennsylvania | $355.63 | $177.18 |
| Rest Of Texas | $365.60 | $181.12 |
| Rest Of Washington | $399.57 | $194.88 |
| Rhode Island | $394.29 | $193.48 |
| Riverside-San Bernardino-Ontario | $414.91 | $201.86 |
| Sacramento-Roseville-Folsom | $435.24 | $209.16 |
| Salinas | $433.70 | $208.40 |
| San Diego-Chula Vista-Carlsbad | $446.04 | $213.55 |
| San Francisco-Oakland-Berkeley (Marin Cnty) | $519.35 | $245.25 |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty) | $519.05 | $244.96 |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty) | $531.31 | $250.99 |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty) | $530.10 | $249.78 |
| San Luis Obispo-Paso Robles | $426.45 | $205.04 |
| Santa Cruz-Watsonville | $451.95 | $215.76 |
| Santa Maria-Santa Barbara | $435.91 | $209.24 |
| Santa Rosa-Petaluma | $456.66 | $217.94 |
| Seattle (King Cnty) | $459.59 | $221.07 |
| South Carolina | $356.81 | $177.19 |
| South Dakota** | $377.68 | $183.28 |
| Southern Maine | $377.24 | $184.59 |
| Stockton | $412.12 | $199.06 |
| Suburban Chicago | $399.44 | $199.79 |
| Tennessee | $349.09 | $172.38 |
| Utah | $362.56 | $179.83 |
| Vallejo | $487.36 | $231.15 |
| Vermont | $375.82 | $183.37 |
| Virgin Islands | $386.98 | $190.45 |
| Virginia | $375.22 | $184.13 |
| Visalia | $412.12 | $199.06 |
| West Virginia | $343.52 | $174.59 |
| Wisconsin | $363.43 | $177.20 |
| Wyoming** | $381.18 | $186.79 |
| Yuba City | $412.12 | $199.06 |
41800 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
$332.23
$471.72
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $421.92 | 1 |
| AL | $338.01 | 1 |
| AR | $332.23 | 1 |
| AZ | $371.86 | 1 |
| CA | $412.12–$531.31 | 29 |
| CO | $403.37 | 1 |
| CT | $411.76 | 1 |
| DC | $445.99 | 1 |
| DE | $378.77 | 1 |
| FL | $373.14–$410.39 | 3 |
| GA | $349.11–$390.65 | 2 |
| GU | $425.45 | 1 |
| HI | $425.45 | 1 |
| IA | $349.87 | 1 |
| ID | $352.20 | 1 |
| IL | $359.33–$399.44 | 4 |
| IN | $354.64 | 1 |
| KS | $347.13 | 1 |
| KY | $345.70 | 1 |
| LA | $344.74–$364.96 | 2 |
| MA | $400.01–$448.85 | 2 |
| MD | $387.14–$445.99 | 3 |
| ME | $353.49–$377.24 | 2 |
| MI | $355.56–$377.73 | 2 |
| MN | $387.00 | 1 |
| MO | $337.22–$367.46 | 3 |
| MS | $334.84 | 1 |
| MT | $383.42 | 1 |
| NC | $357.97 | 1 |
| ND | $378.28 | 1 |
| NE | $352.37 | 1 |
| NH | $396.02 | 1 |
| NJ | $416.61–$439.98 | 2 |
| NM | $357.52 | 1 |
| NV | $382.33 | 1 |
| NY | $364.20–$456.54 | 5 |
| OH | $354.51 | 1 |
| OK | $345.84 | 1 |
| OR | $379.53–$418.88 | 2 |
| PA | $355.63–$399.53 | 2 |
| PR | $386.98 | 1 |
| RI | $394.29 | 1 |
| SC | $356.81 | 1 |
| SD | $377.68 | 1 |
| TN | $349.09 | 1 |
| TX | $352.83–$401.87 | 8 |
| UT | $362.56 | 1 |
| VA | $375.22–$445.99 | 2 |
| VI | $386.98 | 1 |
| VT | $375.82 | 1 |
| WA | $399.57–$459.59 | 2 |
| WI | $363.43 | 1 |
| WV | $343.52 | 1 |
| WY | $381.18 | 1 |
How the 41800 rate is calculated
Each of 41800’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 · 41800
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 1.24Practice expense 9.98Malpractice 0.26
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 41800
41800 has a 10-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 41800
Gum drainage
| 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 · 41800
Gum drainage
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
41800 without 51 · national office
$383.44
Gum drainage
41800-51 · Second procedure: 50%
$191.72
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%).
41800 compared with similar codes
Compare codes
41800 vs 41805 vs 41820 vs 41822: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 41805Foreign body removal
- Use 41805 for removal of a foreign body from gum tissue. Use 41800 when the procedure drains a localized collection.
- 41820Excision gum each quadrant
- 41820 describes excision of gum tissue by quadrant; 41800 is for drainage of a localized collection.
- 41822Excision of gum lesion
- Choose 41822 when the performed service is excision of a gum lesion, not incision and drainage of a collection.
41800 billing questions
When should this code be used instead of a gum-lesion excision code?
Use this code when the service is incision and drainage of a localized collection. If the documented procedure removes gum tissue or a lesion, consider the applicable excision code instead.
Is removal of a foreign body included?
No. This code describes drainage of a collection; removal of a foreign body from gum tissue is a different service, represented by 41805.
Are related postoperative visits separately reported during the global period?
Related postoperative visits for 10 days are included in the procedure's global period.
Can modifier 50 be used for drainage on both sides?
No. The CMS bilateral adjustment does not apply, and modifier 50 is inappropriate for this code.
How does the multiple-procedure reduction work when another procedure is performed?
For procedures performed in the same session, the highest-valued procedure is paid in full and the other procedures are subject to the standard 50% reduction.
Can an assistant or co-surgeon be paid for this procedure?
Medicare does not pay an assistant at surgery for this service. Co-surgeons and team surgery are 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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