HCPCS Q4337: Wound graftMedicare rate & RVUs in Illinois
Reports the per-square-centimeter supply of Artecent Trident used with a primary wound procedure, such as treatment of a diabetic foot or venous leg ulcer.
Medicare pays $116.19–$130.69 for Q4337 in the office in Illinois, from Rest Of Illinois to Suburban Chicago. 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 Q4337 covers
Artecent Trident is a wound graft product reported by the square centimeter when supplied for wound treatment. It may be used in settings such as a wound clinic, physician office, or hospital outpatient department, where a clinician applies the product to a prepared wound. Common situations include chronic diabetic foot ulcers and venous leg ulcers; this code identifies the product supply, not the wound-care procedure itself.
Report Q4337 with the primary procedure for the wound application, using the exact product name and the documented square centimeters represented by the billed units. The record should identify the wound site, product, amount used, and application procedure. CMS classifies Q4337 as an add-on code: it is billed only with a primary procedure and paid within that 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 Q4337 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
4 payment localities
$116.19 to $130.69
| Payment locality | Office | Facility |
|---|---|---|
| Chicago | $127.89 | Unavailable |
| East St. Louis | $117.08 | Unavailable |
| Rest Of Illinois | $116.19 | Unavailable |
| Suburban Chicago | $130.69 | Unavailable |
How the Q4337 rate is calculated
Each of Q4337’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 · Q4337
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 Q4337
The CMS indicators that decide how Q4337 is paid alongside other services.
CMS payment indicators · Q4337
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. |
Q4337 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4336Wound product
- Q4336 identifies Artecent C, while Q4337 identifies Artecent Trident. Select the code matching the specific product used; both are reported per square centimeter.
- Q4338Wound product
- Q4338 identifies Artacent Velos, not Artecent Trident. The product name on the record determines which supply code applies.
- Q4339Wound matrix
- Q4339 identifies Artacent Vericlen. It is a different named product from Artecent Trident, although both descriptors use a per-square-centimeter unit.
Q4337 billing questions
What should be billed with Q4337?
Bill it only with the primary procedure for applying the wound product. For example, skin-substitute application codes are selected according to the wound location and area treated.
How are units determined?
The descriptor is per square centimeter, so report units that represent the documented amount of Artecent Trident. Keep the product size and amount applied in the record.
Can Q4337 be billed by itself?
No. CMS identifies it as an add-on code that must be billed with a primary procedure, and its payment is within that procedure’s global period.
Does Q4337 include interpretation?
No. CMS classifies it as technical-component-only; a separate code covers interpretation.
How is Q4337 distinguished from Q4336 or Q4338?
Those codes identify different named products, even though each is reported per square centimeter. Match the claim to the specific product documented as used.
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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