HCPCS Q4279: Wound productMedicare rate & RVUs in Illinois
Reports Vendaje AC wound-covering product by square centimeter when supplied for placement during a primary wound-application procedure.
Medicare pays $116.19–$130.69 for Q4279 in the office in Illinois, from Rest Of Illinois to Suburban Chicago. 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 Q4279 covers
Q4279 identifies Vendaje AC wound-covering product supplied for placement over a wound; it represents the product, not the work of applying it. Skin-substitute products may be used in managing chronic wounds such as diabetic foot or venous leg ulcers. A surgeon, podiatrist, or wound-care clinician may apply the product in an office or hospital outpatient setting. The code measures the product by square centimeter rather than describing a wound-care visit.
Report Q4279 only with a primary wound-application procedure. Select that procedure based on the treated anatomy and wound surface area, and report Q4279 units for the square centimeters of product supplied. Documentation should identify Vendaje AC, the wound site and dimensions, application details, and product quantity. CMS classifies Q4279 as an add-on paid within the primary procedure’s global period. It is technical-component-only; a separate code covers interpretation.
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 Q4279 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
4 payment localities
$116.19 to $130.69
| Payment locality | Office | Facility |
|---|---|---|
| Chicago | $127.89 | Unavailable |
| East St. Louis | $117.08 | Unavailable |
| Rest Of Illinois | $116.19 | Unavailable |
| Suburban Chicago | $130.69 | Unavailable |
How the Q4279 rate is calculated
Each of Q4279’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 · Q4279
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 Q4279
The CMS indicators that decide how Q4279 is paid alongside other services.
CMS payment indicators · Q4279
Wound product
| 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. |
Q4279 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 15271Skin substitute graft
- 15271 reports the wound-application procedure for qualifying trunk or extremity sites; Q4279 identifies the Vendaje AC product used with a primary procedure.
- 15275Skin substitute
- 15275 is the application procedure for qualifying sites such as the head, hands, or feet. Q4279 reports product rather than application work.
- Q4274Wound graft
- Q4274 identifies Esano AC, a separately named product. Q4279 is specific to Vendaje AC; use the code matching the product supplied.
- Q4280Amniotic matrix
- Q4280 identifies Xcell amnio matrix. Q4279 identifies Vendaje AC, so the product name distinguishes the supply codes.
Q4279 billing questions
Can Q4279 be reported by itself?
No. CMS classifies it as an add-on, so report it with a primary wound-application procedure.
How are Q4279 units determined?
The code is measured per square centimeter. Document the amount of Vendaje AC supplied for the wound application.
Does Q4279 describe the application procedure?
No. Q4279 identifies the Vendaje AC product; a separate primary procedure represents application to the wound.
What should the record support?
Document the product name, wound site and dimensions, application details, and the product quantity in square centimeters.
How is the interpretation reported?
CMS identifies Q4279 as technical-component-only; 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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