Q4188 HCPCS code: Amnioarmor, per square centimeter (add-on, list separately in addition to primary procedure)
Q4188 is the HCPCS Level II code for amnioarmor, per square centimeter (add-on, list separately in addition to primary procedure). In 2024 Medicare paid an average of $648.89 per service for Q4188 across 11,313 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. Medicare volume fell 75% from 2022 to 2024 (45,865 to 11,313 services). In 2024, about 71 clinicians billed Medicare for Q4188 for 365 beneficiaries; Georgia, Florida, Oklahoma accounted for 83% 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 | 2019-01-01 |
| Last action effective | 2026-01-01 |
Who bills Q4188 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 71 |
| Medicare beneficiaries | 365 |
| States with claims | 7 |
| Share of services in top 3 states (Georgia, Florida, Oklahoma) | 83% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for Q4188, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 45,865 | 868 | $674.70 | $538.05 |
| 2023 | 87,146 | 1,535 | $938.79 | $747.88 |
| 2024 | 11,313 | 365 | $814.88 | $648.89 |
States with the most Q4188 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Georgia | 3,076 | $668.60 |
| Florida | 1,821 | $701.65 |
| Oklahoma | 1,453 | $577.21 |
| New York | 480 | $519.03 |
| California | 439 | $757.65 |
What changed for Q4188
- January 2026: Descriptor revised (Was: Amnioarmor, per square centimeter)
- 2019-01-01: Q4188 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 Q4188?
Q4188 is the HCPCS Level II code for amnioarmor, per square centimeter (add-on, list separately in addition to primary procedure). Short descriptor: "Amnioarmor 1 sq cm".
How much does Medicare pay for Q4188?
In 2024, the average Medicare payment was $648.89 per service (average allowed $814.88).
Does Medicare cover Q4188?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Related Q41 codes
- Q4100 — Skin substitute, not otherwise specified
- Q4101 — Apligraf, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4102 — Oasis wound matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4103 — Oasis burn matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4104 — Integra bilayer matrix wound dressing (bmwd), per square centimeter (add-on, list separately in addition to primary procedure)
- Q4105 — Integra dermal regeneration template (drt) or integra omnigraft dermal regeneration matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4106 — Dermagraft, per square centimeter
- Q4107 — Graftjacket, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4108 — Integra matrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4110 — Primatrix, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4111 — Gammagraft, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4112 — Cymetra, injectable, 1 cc
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Next steps
- Run a reimbursement report for a device billed under Q4188
- Watch Q4188 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q4188
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.