HCPCS Q4117: Wound matrixMedicare rate & RVUs in Illinois
Q4117 reports Hyalomatrix furnished for wound coverage, with units based on the product’s square-centimeter measure and a primary application procedure.
Medicare pays $116.19–$130.69 for Q4117 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 Q4117 covers
Q4117 identifies Hyalomatrix, a wound-covering matrix made with hyaluronic acid and a protective outer layer. Clinicians may use it as a temporary covering in the treatment of acute or chronic wounds, including burns and hard-to-heal ulcers. The product is furnished in settings where a clinician performs a skin-substitute application, such as an outpatient wound clinic or hospital department.
Report Q4117 only with the primary procedure, such as the applicable skin-substitute application service; it is an add-on code and is paid within that procedure’s global period. Select the product code that matches the material actually furnished, and report units using the product’s square-centimeter measure. Records should identify Hyalomatrix, the wound treated, the area and amount applied, and the related application procedure. CMS classifies Q4117 as technical-component-only; interpretation is represented by a separate code when separately reportable.
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 Q4117 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 Q4117 rate is calculated
Each of Q4117’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 · Q4117
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 Q4117
The CMS indicators that decide how Q4117 is paid alongside other services.
CMS payment indicators · Q4117
Wound matrix
| 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. |
Q4117 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4118Matristem micromatrix
- Q4118 identifies Matristem Micromatrix, not Hyalomatrix. Choose the code matching the specific product furnished.
- Q4124Wound matrix
- Q4124 identifies Oasis tri-layer wound matrix. It is not interchangeable with Q4117 when the product used is Hyalomatrix.
- Q4116Dermal matrix
- Q4116 reports Alloderm. Use Q4117 for Hyalomatrix and Q4116 only when Alloderm is the material furnished.
Q4117 billing questions
Can Q4117 be billed without a wound application procedure?
No. CMS identifies Q4117 as an add-on code that must be reported with a primary procedure. For wound treatment, pair it with the applicable skin-substitute application service.
Does Q4117 include the clinician’s work to apply the matrix?
Q4117 identifies the Hyalomatrix product. Report the applicable application procedure separately when performed; the product code is paid within that primary procedure’s global period.
How are Q4117 units determined?
The code is measured per square centimeter. Document the area and amount of Hyalomatrix used and report units under the applicable product-coding instructions.
What documentation supports Q4117?
The record should identify Hyalomatrix as the product furnished, the treated wound, the area covered, the quantity used, and the related application procedure.
Does Q4117 have a professional or technical component?
CMS designates Q4117 as technical-component-only, with interpretation covered by a separate code. The product line should identify the Hyalomatrix furnished.
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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