HCPCS code Q4365: Wound product, per square centimeter2026 Medicare rate & RVUs in Massachusetts
Reports the Amnio Buried Dermal Membrane wound product by square centimeter when supplied with a primary wound procedure.
Medicare pays $134.00–$151.95 for Q4365 in the office in Massachusetts, from Rest of Massachusetts to Metropolitan Boston, MA. 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 Q4365 covers
Q4365 identifies Amnio Buried Dermal Membrane supplied for wound coverage, measured by the product’s surface area. Wound-care clinicians and surgeons may use the membrane during treatment of a wound in an outpatient wound clinic, physician office, or hospital outpatient department. The code represents the product, not the work of applying it to the wound.
Report the quantity in square centimeters and retain documentation identifying the product and the area used. CMS classifies Q4365 as an add-on: report it only with a primary procedure, and its payment falls within that procedure’s global period. CMS also classifies it as technical-component-only, with interpretation represented by a separate code. The claim should therefore identify the paired primary procedure and distinguish the product quantity from the wound-application service.
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 Q4365 pays more and less in Massachusetts
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Boston, MA | $151.95 | Unavailable |
| Rest of Massachusetts | $134.00 | Unavailable |
How the Q4365 rate is calculated
Each of Q4365’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 · Q4365
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 Q4365
The CMS indicators that decide how Q4365 is paid alongside other services.
CMS payment indicators · Q4365
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. |
Q4365 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 15271Skin substitute graftFirst 25 cm², trunk/limbs
- 15271 reports the wound-application procedure for qualifying sites and wound area; Q4365 reports the Amnio Buried Dermal Membrane product used with a primary procedure.
- 15275Skin substituteFace and other specified sites
- 15275 is the application procedure for qualifying head, neck, hand, foot, or genital sites. Q4365 identifies the product and is measured by square centimeter.
- Q4363Amniotic membraneHydrated Amniobur, per sq cm
- Q4363 identifies a different Amnio Buried membrane product. Select the HCPCS code matching the product supplied rather than choosing between them by wound size.
Q4365 billing questions
Is Q4365 the wound application procedure?
No. Q4365 reports the Amnio Buried Dermal Membrane product by square centimeter. Report it with the appropriate primary wound procedure.
What should support the reported units?
Document the product used and the square centimeters supplied or applied. The code is measured by product area, not by the number of wounds.
Can Q4365 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure.
Does Q4365 include interpretation?
No. CMS classifies the code as technical-component-only and indicates that a separate code covers interpretation.
How does Q4365 differ from Q4363?
Both are per-square-centimeter wound products, but they identify different products. Use Q4365 for Amnio Buried Dermal Membrane, not the product identified by Q4363.
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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