Q4118 HCPCS code: Matristem micromatrix, 1 mg
Q4118 is the HCPCS Level II code for matristem micromatrix, 1 mg. In 2024 Medicare paid an average of $1.99 per service for Q4118 across 11,973 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. Medicare volume rose 762% from 2022 to 2024 (1,389 to 11,973 services). In 2024, about 16 clinicians billed Medicare for Q4118 for 59 beneficiaries.
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 | 2011-01-01 |
| Last action effective | 2014-01-01 |
Who bills Q4118 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 16 |
| Medicare beneficiaries | 59 |
| States with claims | 1 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for Q4118, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 1,389 | 11 | $4.88 | $3.90 |
| 2023 | 32,181 | 71 | $2.42 | $1.92 |
| 2024 | 11,973 | 59 | $2.50 | $1.99 |
States with the most Q4118 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| New York | 3,850 | $1.98 |
What changed for Q4118
- 2011-01-01: Q4118 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 Q4118?
Q4118 is the HCPCS Level II code for matristem micromatrix, 1 mg. Short descriptor: "Matristem micromatrix".
How much does Medicare pay for Q4118?
In 2024, the average Medicare payment was $1.99 per service (average allowed $2.50).
Does Medicare cover Q4118?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
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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 Q4118
- Watch Q4118 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q4118
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.