Q4170 HCPCS code: Cygnus, per square centimeter
Q4170 is the HCPCS Level II code for cygnus, per square centimeter. In 2024 Medicare paid an average of $44.69 per service for Q4170 across 472 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. Medicare volume fell 57% from 2022 to 2024 (1,089 to 472 services). In 2024, about 12 clinicians billed Medicare for Q4170 for 14 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 | 2017-01-01 |
| Last action effective | 2017-01-01 |
Who bills Q4170 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 12 |
| Medicare beneficiaries | 14 |
| States with claims | 0 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for Q4170, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 1,089 | 25 | $214.73 | $171.35 |
| 2024 | 472 | 14 | $56.09 | $44.69 |
What changed for Q4170
- 2017-01-01: Q4170 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 Q4170?
Q4170 is the HCPCS Level II code for cygnus, per square centimeter. Short descriptor: "Cygnus, per sq cm".
How much does Medicare pay for Q4170?
In 2024, the average Medicare payment was $44.69 per service (average allowed $56.09).
Does Medicare cover Q4170?
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 Q4170
- Watch Q4170 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q4170
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.