HCPCS code Q4350: Wound matrix2026 Medicare rate & RVUs in Washington
Reports Palisade DM matrix by square centimeter when the material is used with a primary wound procedure, such as skin substitute application.
Medicare pays $134.00–$156.14 for Q4350 in the office in Washington, from Rest Of Washington to Seattle (King Cnty). 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 Q4350 covers
Q4350 identifies Palisade DM matrix used as wound-care graft material. A physician or other qualified practitioner may apply the matrix in an outpatient wound clinic or surgical setting as part of treatment for a wound. The code identifies the specific product and measures it by square centimeter; it is not a general code for any wound covering or matrix product.
Report Q4350 only with a primary procedure, using the square-centimeter quantity supported by the product used and the wound-care record. Documentation should identify Palisade DM, the wound treated, the amount applied, and the related procedure. CMS classifies this as an add-on code and pays it within the primary procedure's global period. It is 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 Q4350 pays more and less in Washington
| Payment locality | Office | Facility |
|---|---|---|
| Rest Of Washington | $134.00 | Unavailable |
| Seattle (King Cnty) | $156.14 | Unavailable |
How the Q4350 rate is calculated
Each of Q4350’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 · Q4350
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 Q4350
The CMS indicators that decide how Q4350 is paid alongside other services.
CMS payment indicators · Q4350
Wound matrix
| 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. |
Q4350 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- Q4346Wound matrix
- Q4346 identifies Shelter DM Matrix, while Q4350 identifies Palisade DM. Select the code for the specific matrix product used.
- Q4351Wound matrix
- Q4351 identifies Enclose TL Matrix, not Palisade DM. These are product-specific codes, not different wound-size levels.
- 15271Skin substitute graft
- 15271 reports the primary skin substitute application for qualifying wounds on the trunk, arms, or legs; Q4350 reports the Palisade DM material by square centimeter.
- 15275Skin substitute
- 15275 reports a primary skin substitute application at its specified anatomic sites; Q4350 identifies the Palisade DM material used with a primary procedure.
Q4350 billing questions
Can Q4350 be reported by itself?
No. CMS identifies Q4350 as an add-on code, so report it with a primary procedure. Its payment is within that procedure's global period.
How should the units be determined?
The code is measured per square centimeter. Support the reported quantity with documentation of the Palisade DM product used and the amount applied.
Can Q4350 be used for another wound matrix product?
No. Q4350 identifies Palisade DM. Use the HCPCS code that identifies the actual product applied.
Does Q4350 include interpretation?
No. CMS classifies Q4350 as technical-component-only; a separate code covers interpretation.
What documentation supports Q4350?
Record the product name, wound treated, quantity in square centimeters, and the primary procedure performed.
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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