CPT code 11001: Skin debridement, each additional 10% body surface2026 Medicare rate & RVUs in Missouri
Report 11001 for each additional 10% of body surface area, or portion thereof, debrided for extensive eczematous or infected skin, with 11000.
Medicare pays $24.77–$26.27 for 11001 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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What 11001 covers
This add-on represents debridement of extensive eczematous or infected skin beyond the area captured by the primary service. A dermatologist or another physician managing widespread skin disease may perform the service in an office, hospital, or other treatment setting. The relevant measure is the percentage of total body surface area debrided, not the wound’s depth or its area in square centimeters.
Report 11001 only with 11000, which accounts for the initial body-surface portion; use one unit for each additional 10% or part of 10%. Documentation should identify the condition treated, the skin debrided, and the percentage of body surface area involved so the additional units are supported. CMS classifies 11001 as an add-on code, with payment handled within the primary procedure’s global period.
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 11001 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
$24.77 to $26.27
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | $26.03 | $12.55 |
| Metropolitan St. Louis, MO | $26.27 | $12.60 |
| Rest of Missouri | $24.77 | $12.39 |
How the 11001 rate is calculated
Each of 11001’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 · 11001
RVUs × geographic indexes × conversion factor
Work0.29
0.29 RVUs× 1.000 GPCI
Practice expense0.49
0.49 RVUs× 1.000 GPCI
Malpractice0.03
0.03 RVUs× 1.000 GPCI
Adjusted RVUs
0.8100
Conversion factor
$33.4009
Medicare rate
$27.05
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 11001
The CMS indicators that decide how 11001 is paid alongside other services.
CMS payment indicators · 11001
Skin debridement, each additional 10% body surface
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| 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. |
11001 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 11000Skin debridementUp to 10% body surface
- 11000 covers the initial body-surface portion of extensive eczematous or infected skin debridement. Add 11001 for each additional 10% or part of 10%.
- 11042Wound debridementSubcutaneous tissue, first 20 sq cm
- 11042 applies to wound debridement reaching subcutaneous tissue and is measured by wound area. 11001 instead counts additional body-surface area for extensive eczematous or infected skin.
- 11045Wound debridementSubcutaneous, each additional 20 sq cm
- 11045 adds wound area beyond the initial area reported with 11042. 11001 adds body-surface area beyond the initial portion reported with 11000.
11001 billing questions
Can 11001 be reported by itself?
No. It is an add-on to 11000 and represents body-surface area beyond the portion captured by that primary code.
How many units should be reported?
Report one unit for each additional 10% of body surface area, or part of 10%, debrided beyond the area represented by 11000.
What documentation supports the additional units?
Document the eczematous or infected skin treated and the percentage of total body surface area debrided, including the additional area beyond the primary portion.
Should 11001 be used for a deep wound debridement?
Not based on wound depth. Codes such as 11042–11044 describe wound debridement by the deepest tissue removed and use square-centimeter measurements; 11001 measures additional body-surface area for extensive eczematous or infected skin.
How does the global period affect 11001?
CMS treats this add-on within the global period of its primary procedure. Report it with 11000 rather than as a separate primary service.
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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