Q4238 HCPCS code: Derm-maxx, per square centimeter
Q4238 is the HCPCS Level II code for derm-maxx, per square centimeter. In 2024 Medicare paid an average of $914.93 per service for Q4238 across 177,822 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. Medicare volume rose 8202% from 2023 to 2024 (2,142 to 177,822 services). In 2024, about 290 clinicians billed Medicare for Q4238 for 1,153 beneficiaries; California, Texas, Arizona accounted for 83% of services.
Code details
| Field | Value |
|---|---|
| Section | Q codes — Temporary codes |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 51 — Drug or biological (priced per ASP/average sales price rules) |
| BETOS category | O1E — Other drugs |
| Added | 2020-07-01 |
| Last action effective | 2020-07-01 |
Who bills Q4238 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 290 |
| Medicare beneficiaries | 1,153 |
| States with claims | 13 |
| Share of services in top 3 states (California, Texas, Arizona) | 83% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for Q4238, 2023–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2023 | 2,142 | 31 | $1,728.96 | $1,377.55 |
| 2024 | 177,822 | 1,153 | $1,148.31 | $914.93 |
States with the most Q4238 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| California | 100,204 | $914.23 |
| Texas | 25,851 | $915.54 |
| Arizona | 11,575 | $880.79 |
| Ohio | 6,577 | $913.53 |
| Georgia | 4,787 | $843.30 |
What changed for Q4238
- 2020-07-01: Q4238 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code Q4238?
Q4238 is the HCPCS Level II code for derm-maxx, per square centimeter. Short descriptor: "Derm-maxx, per sq cm".
How much does Medicare pay for Q4238?
In 2024, the average Medicare payment was $914.93 per service (average allowed $1,148.31).
Does Medicare cover Q4238?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Related Q42 codes
- Q4200 — Skin te, per square centimeter
- Q4201 — Matrion, per square centimeter
- Q4202 — Keroxx (2.5g/cc), 1cc
- Q4203 — Derma-gide, per square centimeter
- Q4204 — Xwrap, per square centimeter
- Q4205 — Membrane graft or membrane wrap, per square centimeter
- Q4206 — Fluid flow or fluid gf, 1 cc
- Q4208 — Novafix, per square cenitmeter
- Q4209 — Surgraft, per square centimeter
- Q4210 — Axolotl graft or axolotl dualgraft, per square centimeter
- Q4211 — Amnion bio or axobiomembrane, per square centimeter
- Q4212 — Allogen, per cc
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under Q4238
- Watch Q4238 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q4238
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.