Q4303 HCPCS code: Complete aa, per square centimeter (add-on, list separately in addition to primary procedure)
Q4303 is the HCPCS Level II code for complete aa, per square centimeter (add-on, list separately in addition to primary procedure). In 2024 Medicare paid an average of $2,628.27 per service for Q4303 across 70,602 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. In 2024, about 167 clinicians billed Medicare for Q4303 for 554 beneficiaries; Florida, Texas, California accounted for 73% 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 | 2024-01-01 |
| Last action effective | 2026-01-01 |
Who bills Q4303 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 167 |
| Medicare beneficiaries | 554 |
| States with claims | 11 |
| Share of services in top 3 states (Florida, Texas, California) | 73% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for Q4303, 2024–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2024 | 70,602 | 554 | $3,298.76 | $2,628.27 |
States with the most Q4303 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Florida | 17,016 | $2,605.56 |
| Texas | 15,179 | $2,697.71 |
| California | 11,279 | $2,596.82 |
| Alabama | 4,787 | $2,713.33 |
| Oklahoma | 3,302 | $2,379.66 |
What changed for Q4303
- January 2026: Descriptor revised (Was: Complete aa, per square centimeter)
- 2024-01-01: Q4303 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 Q4303?
Q4303 is the HCPCS Level II code for complete aa, per square centimeter (add-on, list separately in addition to primary procedure). Short descriptor: "Complete aa, per sq cm".
How much does Medicare pay for Q4303?
In 2024, the average Medicare payment was $2,628.27 per service (average allowed $3,298.76).
Does Medicare cover Q4303?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Related Q43 codes
- Q4300 — Acesso tl, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4301 — Activate matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4302 — Complete aca, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4304 — Grafix plus, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4305 — American amnion ac tri-layer, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4306 — American amnion ac, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4307 — American amnion, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4308 — Sanopellis, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4309 — Via matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4310 — Procenta, per 100 mg
- Q4311 — Acesso, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4312 — Acesso ac, per square centimeter (add-on, list separately in addition to primary procedure)
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Next steps
- Run a reimbursement report for a device billed under Q4303
- Watch Q4303 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q4303
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.