HCPCS Q4141: Skin substituteMedicare rate & RVUs in Washington
Q4141 reports AlloSkin AC supplied for a wound, billed by square-centimeter unit alongside the related skin-substitute application procedure.
Medicare pays $134.00–$156.14 for Q4141 in the office in Washington, from Rest Of Washington to Seattle (King Cnty). 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 Q4141 covers
Q4141 identifies AlloSkin AC, a human skin allograft used as a wound-covering product. It may be used in outpatient wound care for wounds such as diabetic foot ulcers or venous leg ulcers. Wound-care physicians, podiatrists, and surgeons may apply it as part of a treatment plan. The application procedure and the product are distinct services for reporting purposes.
Report Q4141 with the primary skin-substitute application procedure, using units that reflect the square-centimeter amount documented as supplied. The record should identify AlloSkin AC, the treated wound, the amount used, and the associated application. CMS treats Q4141 as an add-on: it is billed only with a primary procedure and paid within that procedure’s global period. It is a technical-component-only code, with interpretation represented by a separate code. CMS assigns practice-expense RVUs and no physician-work RVUs to Q4141.
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 Q4141 pays more and less in Washington
| Payment locality | Office | Facility |
|---|---|---|
| Rest Of Washington | $134.00 | Unavailable |
| Seattle (King Cnty) | $156.14 | Unavailable |
How the Q4141 rate is calculated
Each of Q4141’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 · Q4141
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense3.81
3.81 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
3.8100
Conversion factor
$33.4009
Medicare rate
$127.26
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for Q4141
The CMS indicators that decide how Q4141 is paid alongside other services.
CMS payment indicators · Q4141
Skin substitute
| 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) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 3 | Technical component only. |
Q4141 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4140BioD-Fence
- Q4140 identifies Biodfence, not AlloSkin AC. Select the product code that matches the material documented as supplied.
- Q4142Tissue matrix
- Q4142 identifies XCM biologic tissue matrix. Q4141 is specific to AlloSkin AC; the product name and quantity record should support the selected code.
- 15271Skin substitute graft
- 15271 reports the application procedure for specified body sites and treatment area. Q4141 reports the AlloSkin AC product used with that procedure.
Q4141 billing questions
What should be reported with Q4141?
Report Q4141 with the primary skin-substitute application procedure performed for the wound. Q4141 identifies the AlloSkin AC product, not the application service.
How are units determined?
Use units based on the square-centimeter amount of AlloSkin AC supplied, supported by the product and wound documentation.
What documentation supports Q4141?
Document the product as AlloSkin AC, the wound treated, the quantity supplied, and the related application procedure.
Does Q4141 have its own global period?
CMS classifies it as an add-on paid within the primary procedure’s global period. Bill it only with a primary procedure.
Does Q4141 include interpretation?
No. CMS identifies Q4141 as a technical-component-only code; a separate code covers interpretation.
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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