HCPCS Q4311: Acesso graftMedicare rate & RVUs in Guam
Reports the Acesso wound product by treated area when it is supplied with a primary wound application procedure.
Medicare pays $144.69 for Q4311 in the office in Guam (Hawaii, Guam). 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 Q4311 covers
Q4311 identifies the Acesso product used in wound care. It is reported by the square centimeter for the product associated with treatment of a wound, such as a chronic ulcer. Wound-care clinicians, podiatrists, and surgeons may use it in office or hospital outpatient settings alongside a procedure that applies a skin substitute. Q4311 is distinct from other named Acesso products, including Acesso TL and Acesso AC.
Report the documented area treated and the amount of Acesso product used, along with the wound site and the primary application procedure. CMS classifies Q4311 as an add-on code: it is billed only with a primary procedure, and its payment falls within that procedure’s global period. CMS also classifies it as technical-component-only; a separate code covers interpretation. The code has no physician work RVUs, with practice-expense RVUs listed for both office and facility settings.
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.
Q4311 in Hawaii, Guam
| Payment locality | Office | Facility |
|---|---|---|
| Hawaii, Guam | $144.69 | Unavailable |
How the Q4311 rate is calculated
Each of Q4311’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 · Q4311
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 0.00Practice expense 3.81Malpractice 0.00
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for Q4311
The CMS indicators that decide how Q4311 is paid alongside other services.
CMS payment indicators · Q4311
Acesso graft
| 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. |
Q4311 compared with similar codes
Compare codes
Q4311 vs Q4300 vs Q4312 vs Q4310: national Medicare rates
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How to choose
- Q4300Wound product
- Q4300 identifies Acesso TL. Q4311 identifies Acesso; select the code that matches the product documented.
- Q4312Wound product
- Q4312 identifies Acesso AC, while Q4311 identifies Acesso. These are distinct product codes, not interchangeable area units.
- Q4310Procenta, per 100 mg
- Q4310 identifies Procenta and is measured per 100 mg; Q4311 identifies Acesso and is measured per square centimeter.
Q4311 billing questions
How is Q4311 measured?
Report the Acesso product by square centimeter. Documentation should support the area treated and the amount used.
Can Q4311 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure.
How does the global-period rule affect payment?
Payment for Q4311 is within the primary procedure’s global period, rather than separate from that procedure’s global payment.
How is Q4311 different from Q4300 or Q4312?
Those codes identify other named Acesso products: Q4300 is Acesso TL, and Q4312 is Acesso AC. Use the code matching the product documented.
What should the record support?
Document the Acesso product, wound site, treated area, amount used, and associated primary application 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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