HCPCS Q4328: Wound productMedicare rate & RVUs in Oregon
Report Q4328 for the square-centimeter amount of Most wound product used with a separately coded skin-substitute application procedure.
Medicare pays $126.75–$141.38 for Q4328 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 Q4328 covers
Q4328 identifies Most, a wound-care skin substitute product, by the square centimeter. Wound-care physicians, surgeons, and other clinicians who apply skin substitutes may use it in outpatient wound clinics, offices, or hospital settings. The product amount is reported separately from the procedure used to prepare the wound and apply the graft; Q4328 represents the product, not the clinician’s application work.
Report the number of square centimeters of Most used, supported by documentation of the product and treated wound area. Select the separate application procedure based on the applicable body site and wound-area criteria. CMS identifies Q4328 as an add-on code: bill it only with a primary procedure, and payment is within that procedure’s global period. CMS also classifies it as technical-component-only; a separate code covers interpretation.
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 Q4328 pays more and less in Oregon
| Payment locality | Office | Facility |
|---|---|---|
| Portland | $141.38 | Unavailable |
| Rest Of Oregon | $126.75 | Unavailable |
How the Q4328 rate is calculated
Each of Q4328’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 · Q4328
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 Q4328
The CMS indicators that decide how Q4328 is paid alongside other services.
CMS payment indicators · Q4328
Wound product
| 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. |
Q4328 compared with similar codes
Compare codes
Q4328 vs Q4327 vs Q4329 vs 15271: national Medicare rates
Swap in your local Medicare rate.
How to choose
- Q4327Amniotic allograft
- Q4327 identifies Duoamnion, while Q4328 identifies Most. Select the product code for the product actually used.
- Q4329Wound graft
- Q4329 identifies Singlay, while Q4328 identifies Most. These product codes are not interchangeable based on wound area alone.
- 15271Skin substitute graft
- 15271 reports a skin-substitute application procedure when its site and area criteria apply; Q4328 reports the Most product used with a primary procedure.
Q4328 billing questions
Does Q4328 report the application procedure?
No. Q4328 reports the Most product by square centimeter. Report the applicable skin-substitute application procedure separately.
How should the units be determined?
Use the square-centimeter amount of Most used, supported by documentation of the treated area and product applied.
Can Q4328 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure.
What should the record support?
Document that Most was used, the amount applied in square centimeters, the treated wound area, and the associated primary procedure.
How is the code classified for components?
CMS classifies Q4328 as technical-component-only; 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
Show the CMS file lines behind this rate
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