Q4390 – Ascendion, per square centimeter (add-on, list separately in addition to primary procedure)
HCPCS Level II code · Q codes: Temporary Codes
HCPCS codeQ4390
- Long description
- Ascendion, per square centimeter (add-on, list separately in addition to primary procedure)
- Short description
- Ascendion per sq cm
- Pricing indicator
11Priced using national RVUs (Physician Fee Schedule)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
O1EOther drugs- Added
- October 1, 2025
- Last change
- January 1, 2026 – No change
Frequently asked questions
What is HCPCS code Q4390?
Q4390 is a HCPCS Level II code for ascendion, per square centimeter (add-on, list separately in addition to primary procedure).
Does Medicare cover Q4390?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby Q codes
- Q4382 – Advograft dual, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4383 – Axolotl graft ultra, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4384 – Axolotl dualgraft ultra, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4385 – Apollo ft, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4386 – Acesso trifaca, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4387 – Neothelium ft, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4388 – Neothelium 4l, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4389 – Neothelium 4l+, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4391 – Amnioplast double, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4392 – Grafix duo, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4393 – Surgraft ac, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4394 – Surgraft aca, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4395 – Acelagraft, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4396 – Natalin, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4397 – Summit aaa, per square centimeter (add-on, list separately in addition to primary procedure)
- Q4398 – Summit ac, per square centimeter (add-on, list separately in addition to primary procedure)
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.