HCPCS code Q4313: Wound product, per square centimeter2026 Medicare rate & RVUs in Oregon
Dermabind FM is a wound-covering skin substitute product reported by square centimeter with a qualifying wound application procedure.
Medicare pays $126.75–$141.38 for Q4313 in the office in Oregon, from Rest of Oregon to Portland, OR. 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 Q4313 covers
Q4313 identifies Dermabind FM supplied for wound coverage, with quantity measured in square centimeters. It represents the product, not wound preparation or the clinician’s application service. Wound-care physicians, surgeons, and other clinicians treating open wounds may use the product in office or hospital outpatient settings. The product code follows the Dermabind FM used, rather than the wound’s location or a particular diagnosis.
Report Q4313 only with a primary wound application procedure, selecting the applicable procedure based on the treated site and wound area. The record should identify Dermabind FM and support the quantity reported in square centimeters. CMS treats Q4313 as an add-on: payment is made with the primary procedure and within that procedure’s global period. CMS classifies the code as technical-component-only, with interpretation represented by a separate code.
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 Q4313 pays more and less in Oregon
| Payment locality | Office | Facility |
|---|---|---|
| Portland, OR | $141.38 | Unavailable |
| Rest of Oregon | $126.75 | Unavailable |
How the Q4313 rate is calculated
Each of Q4313’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 · Q4313
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 Q4313
The CMS indicators that decide how Q4313 is paid alongside other services.
CMS payment indicators · Q4313
Wound product, per square centimeter
| 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. |
Q4313 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4312Wound productAcesso AC, per square centimeter
- Q4312 identifies Acesso AC, not Dermabind FM. Select the product-specific code for the product supplied.
- Q4314Wound productReeva, per square centimeter
- Q4314 identifies Reeva. Its per-square-centimeter unit does not make it interchangeable with Dermabind FM.
- Q4310ProcentaPer 100 mg
- Q4310 identifies Procenta and is reported per 100 mg; Q4313 identifies Dermabind FM and is measured per square centimeter.
Q4313 billing questions
Does Q4313 include the wound application service?
No. Q4313 identifies the Dermabind FM product; report it with the appropriate primary wound application procedure, such as a code in the 15271–15278 series.
How do I select the primary application code?
Choose the application procedure based on the wound site and treated area. For example, 15271 and 15275 apply to different anatomic site groupings.
How many units should I report?
Report the Dermabind FM quantity in square centimeters. Documentation should support the product and the amount used.
Is interpretation included in Q4313?
CMS classifies Q4313 as technical-component-only; a separate code covers interpretation.
Can I report Q4313 by itself?
No. CMS identifies it as an add-on code, so it is billed with a primary procedure and paid within that procedure’s global period.
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
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