Q4239 HCPCS code: Amnio-maxx or amnio-maxx lite, per square centimeter (add-on, list separately in addition to primary procedure)
Q4239 is the HCPCS Level II code for amnio-maxx or amnio-maxx lite, per square centimeter (add-on, list separately in addition to primary procedure). In 2024 Medicare paid an average of $1,902.47 per service for Q4239 across 97,017 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. Medicare volume rose 23679% from 2023 to 2024 (408 to 97,017 services). In 2024, about 585 clinicians billed Medicare for Q4239 for 1,867 beneficiaries; California, Ohio, Texas accounted for 62% of services.
Code details
| Field | Value |
|---|---|
| Section | Q codes — Temporary codes |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 11 — Priced using national relative value units (Physician Fee Schedule) |
| BETOS category | O1E — Other drugs |
| Added | 2020-07-01 |
| Last action effective | 2026-01-01 |
Who bills Q4239 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 585 |
| Medicare beneficiaries | 1,867 |
| States with claims | 19 |
| Share of services in top 3 states (California, Ohio, Texas) | 62% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for Q4239, 2023–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2023 | 408 | 14 | $921.78 | $734.42 |
| 2024 | 97,017 | 1,867 | $2,387.81 | $1,902.47 |
States with the most Q4239 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| California | 36,702 | $1,902.06 |
| Ohio | 11,190 | $1,925.96 |
| Texas | 10,383 | $1,898.32 |
| Florida | 7,866 | $1,906.50 |
| Nevada | 4,386 | $1,896.63 |
What changed for Q4239
- January 2026: Descriptor revised (Was: Amnio-maxx or amnio-maxx lite, per square centimeter)
- 2020-07-01: Q4239 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 Q4239?
Q4239 is the HCPCS Level II code for amnio-maxx or amnio-maxx lite, per square centimeter (add-on, list separately in addition to primary procedure). Short descriptor: "Amnio-maxx or lite per sq cm".
How much does Medicare pay for Q4239?
In 2024, the average Medicare payment was $1,902.47 per service (average allowed $2,387.81).
Does Medicare cover Q4239?
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 (add-on, list separately in addition to primary procedure)
- Q4201 — Matrion, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4202 — Keroxx (2.5g/cc), 1cc
- Q4203 — Derma-gide, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4204 — Xwrap, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4205 — Membrane graft or membrane wrap, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4206 — Fluid flow or fluid gf, 1 cc
- Q4207 — Carbon life, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4208 — Novafix, per square cenitmeter (add-on, list separately in addition to primary procedure)
- Q4209 — Surgraft, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4210 — Axolotl graft or axolotl dualgraft, per square centimeter
- Q4211 — Amnion bio or axobiomembrane, per square centimeter (add-on, list separately in addition to primary procedure)
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 Q4239
- Watch Q4239 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q4239
Sources: CMS HCPCS Level II release October 2026; 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.