HCPCS Q4320: Wound graftMedicare rate & RVUs in Oregon
Q4320 reports Pellograft by square centimeter when the graft material is supplied for application to a wound during a qualifying primary procedure.
Medicare pays $126.75–$141.38 for Q4320 in the office in Oregon, from Rest Of Oregon to Portland. 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 Q4320 covers
Q4320 identifies Pellograft supplied for wound coverage, measured by square centimeter. It is relevant when a clinician applies this graft material to a wound, such as a diabetic foot or venous leg ulcer. Wound-care physicians, surgeons, and podiatrists may provide these services in office, clinic, or hospital settings. The application procedure addresses placement of the graft; Q4320 identifies the Pellograft product used.
Report the product quantity in square centimeters and retain documentation identifying Pellograft and the amount used. Pair Q4320 with the appropriate primary application procedure; it is an add-on code and is paid within that procedure’s global period. CMS classifies Q4320 as technical-component-only, with interpretation covered by a separate code. The record should support both the wound treatment and the reported product quantity.
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 Q4320 pays more and less in Oregon
| Payment locality | Office | Facility |
|---|---|---|
| Portland | $141.38 | Unavailable |
| Rest Of Oregon | $126.75 | Unavailable |
How the Q4320 rate is calculated
Each of Q4320’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 · Q4320
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 Q4320
The CMS indicators that decide how Q4320 is paid alongside other services.
CMS payment indicators · Q4320
Wound 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. |
Q4320 compared with similar codes
Compare codes
Q4320 vs Q4321 vs Q4322 vs 15271: national Medicare rates
Swap in your local Medicare rate.
How to choose
- Q4321Renograft graft
- Q4321 identifies Renograft, while Q4320 identifies Pellograft. Select according to the product actually supplied, not the wound size.
- Q4322Caregraft
- Q4322 identifies Caregraft rather than Pellograft. Both are product-specific codes with a square-centimeter unit basis.
- 15271Skin substitute graft
- 15271 reports the qualifying graft-application service for its specified sites and initial area; Q4320 reports the Pellograft material used with a primary procedure.
Q4320 billing questions
When should Q4320 be selected instead of another wound-graft product code?
Use Q4320 when the product supplied is Pellograft. Other product codes identify different named graft products, even when the unit basis is also square centimeters.
Can Q4320 be reported by itself?
No. CMS identifies it as an add-on code, so report it with the appropriate primary procedure for applying the graft.
How should units be determined?
The code is measured per square centimeter. Document the Pellograft quantity used in square centimeters; wound dimensions alone do not establish the amount of product reported.
Is interpretation included in Q4320?
CMS classifies Q4320 as technical-component-only and specifies that a separate code covers interpretation.
How does the primary procedure affect payment?
Q4320 is paid within the primary procedure’s global period. It must be reported with that primary procedure rather than as a standalone service.
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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