HCPCS code Q4312: Wound product, acesso AC, per square centimeter2026 Medicare rate & RVUs in Maine
Q4312 reports Acesso AC wound product by square centimeter when furnished with a primary wound application procedure.
Medicare pays $117.08–$126.11 for Q4312 in the office in Maine, from Rest of Maine to Southern Maine, ME. 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 Q4312 covers
Q4312 identifies the Acesso AC product used as a skin substitute or wound-covering material. It is reported by the clinician or facility furnishing the product during wound care, such as treatment of a chronic ulcer. The product code is distinct from the procedure that prepares the wound and applies the material; that procedure is selected according to the treated site and wound area.
Report the quantity in square centimeters and retain documentation identifying Acesso AC, the amount furnished, and the treated wound. CMS classifies Q4312 as an add-on code: submit it with a primary procedure, and its payment falls within that procedure’s global period. CMS also classifies it as technical-component-only, with a separate code covering interpretation. For example, the primary application procedure may be 15271 for an eligible trunk, arm, or leg site, or 15275 for an eligible head, face, neck, hand, foot, or genital site.
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 Q4312 pays more and less in Maine
| Payment locality | Office | Facility |
|---|---|---|
| Rest of Maine | $117.08 | Unavailable |
| Southern Maine, ME | $126.11 | Unavailable |
How the Q4312 rate is calculated
Each of Q4312’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 · Q4312
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 Q4312
The CMS indicators that decide how Q4312 is paid alongside other services.
CMS payment indicators · Q4312
Wound product, acesso 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. |
Q4312 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4311Acesso graftPer square centimeter
- Q4311 identifies Acesso; Q4312 identifies Acesso AC. Use the code matching the product furnished, even though both are reported by square centimeter.
- 15271Skin substitute graftFirst 25 cm², trunk/limbs
- Q4312 reports the Acesso AC product quantity. Code 15271 reports the application procedure for eligible trunk, arm, or leg sites.
- 15275Skin substituteFace and other specified sites
- Q4312 reports the product quantity, not its application. Code 15275 is the application procedure for eligible head, face, neck, hand, foot, or genital sites.
Q4312 billing questions
What does one unit of Q4312 represent?
The code is reported by square centimeter. Document the Acesso AC product and the quantity furnished for the treated wound.
Can Q4312 be billed by itself?
No. CMS identifies it as an add-on code, so report it with a primary procedure for the wound service.
Which application procedure is paired with Q4312?
Choose the primary application procedure based on the treated site and wound area. Examples include 15271 for eligible trunk, arm, or leg sites and 15275 for eligible head, face, neck, hand, foot, or genital sites.
How is Q4312 different from Q4311?
Both are product-specific codes reported by square centimeter, but Q4312 identifies Acesso AC and Q4311 identifies Acesso. Do not select between them based only on the similar names.
Does Q4312 include interpretation?
No. CMS classifies Q4312 as technical-component-only and indicates that 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
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