HCPCS code Q4184: Wound product2026 Medicare rate & RVUs in Texas
Reports Cellesta or Duo wound product by square centimeter when the product is supplied for application during a qualifying wound procedure.
Medicare pays $115.80–$134.64 for Q4184 in the office in Texas, from Beaumont to Austin. 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 Q4184 covers
Q4184 identifies Cellesta or Duo wound product supplied for treatment of a skin wound. Physicians, podiatrists, and other qualified clinicians may use it in office-based or outpatient wound care when applying a wound product as part of a primary procedure. The code represents the product quantity, not the clinical application service itself.
Report Q4184 only with a primary procedure; CMS treats it as an add-on and pays it within that procedure’s global period. Select units from the square centimeters of product represented, and document the wound site, treated area, product used, and amount applied. CMS classifies Q4184 as technical-component-only, with interpretation covered by a separate code. Its CMS relative values assign practice expense but no physician work or malpractice value.
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 Q4184 pays more and less in Texas
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
8 payment localities
$115.80 to $134.64
8 of 8 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Austin | $134.64 | Unavailable |
| Beaumont | $115.80 | Unavailable |
| Brazoria | $126.11 | Unavailable |
| Dallas | $126.75 | Unavailable |
| Fort Worth | $125.48 | Unavailable |
| Galveston | $126.37 | Unavailable |
| Houston | $126.37 | Unavailable |
| Rest Of Texas | $120.77 | Unavailable |
How the Q4184 rate is calculated
Each of Q4184’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 · Q4184
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 Q4184
The CMS indicators that decide how Q4184 is paid alongside other services.
CMS payment indicators · Q4184
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. |
Q4184 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 15271Skin substitute graft
- 15271 reports the application procedure for qualifying wounds; Q4184 reports the Cellesta or Duo product supplied for that procedure.
- 15273Skin substitute graft
- 15273 reports the application service for its specified wound sites or surface areas. Q4184 identifies the product and is reported with the appropriate primary procedure.
- Q4185Cellesta flowab amnion 0.5cc
- Q4185 identifies Cellesta Flowable amnion and uses 0.5-cc units. Q4184 identifies Cellesta or Duo and uses square-centimeter units.
- Q4186EpiFix material
- Q4186 identifies EpiFix, not Cellesta or Duo. Both are product codes reported by square centimeter, so verify the product supplied.
Q4184 billing questions
Can Q4184 be reported by itself?
No. CMS identifies it as an add-on code, so it must be reported with a primary procedure and is paid within that procedure’s global period.
Is Q4184 the application procedure code?
No. Q4184 reports the Cellesta or Duo product by square centimeter. Report the applicable wound-product application procedure separately as the primary service.
How should the units be supported?
Document the product identity and the square centimeters applied to the wound. The Q4184 unit is based on square centimeters.
How does Q4184 differ from Q4185?
Q4184 identifies Cellesta or Duo by square centimeter; Q4185 identifies Cellesta Flowable amnion in 0.5-cc units. The product and its stated billing unit distinguish them.
Does Q4184 include interpretation?
No. CMS classifies Q4184 as technical-component-only and indicates that 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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