HCPCS code Q4375: Wound graft, duograft AC, per square centimeter2026 Medicare rate & RVUs in Georgia
Reports Duograft AC product used in wound treatment, measured by the number of square centimeters supplied for application with a primary procedure.
Medicare pays $113.51–$129.29 for Q4375 in the office in Georgia, from Rest of Georgia to Atlanta, GA. 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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On this page 9 sections
What Q4375 covers
Q4375 identifies Duograft AC, a wound graft product reported by the square centimeter. It represents the product used during wound treatment, not the clinician’s work to prepare or apply it. Wound-care clinicians, surgeons, and podiatrists may use graft products in outpatient wound clinics or procedural settings; the code applies specifically when the product used is Duograft AC.
Report the quantity in square centimeters and pair Q4375 with the applicable primary procedure; it is not billed by itself. Documentation should identify Duograft AC, the treated wound, the amount used, and the associated procedure. CMS classifies this as an add-on code paid within the primary procedure’s global period. It is also a technical-component-only code: interpretation is covered by a separate code, not Q4375.
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 Q4375 pays more and less in Georgia
| Payment locality | Office | Facility |
|---|---|---|
| Atlanta, GA | $129.29 | Unavailable |
| Rest of Georgia | $113.51 | Unavailable |
How the Q4375 rate is calculated
Each of Q4375’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 · Q4375
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 Q4375
The CMS indicators that decide how Q4375 is paid alongside other services.
CMS payment indicators · Q4375
Wound graft, duograft AC, 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. |
Q4375 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4376Wound graftDuoGraft AA, per square centimeter
- Q4376 identifies Duograft AA, while Q4375 identifies Duograft AC. Select the product code matching the graft actually used.
- 15271Skin substitute graftFirst 25 cm², trunk/limbs
- CPT 15271 reports a wound-application procedure when its site and area criteria are met; Q4375 reports the Duograft AC product.
- Q4377Skin substituteTrigraft, per sq cm
- Q4377 identifies Trigraft FT rather than Duograft AC. The product used determines which supply code to report.
Q4375 billing questions
Can Q4375 be reported without a wound application procedure?
No. CMS identifies Q4375 as an add-on code, so it must be billed with a primary procedure.
How is the quantity determined?
Report the Duograft AC product quantity by the square centimeter. Document the amount used and identify the product.
Which code reports the graft application?
Use the applicable primary wound-application procedure code. For example, CPT 15271 or 15275 may apply depending on wound location and the procedure’s criteria.
Does Q4375 include interpretation?
No. CMS classifies Q4375 as technical-component-only; a separate code covers interpretation.
How does Q4375 relate to the primary procedure’s global period?
CMS states that Q4375 is paid within the primary procedure’s global period and must be reported with that procedure.
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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