C9399 HCPCS Level II code: Unclassified drugs or biologicals
C9399 is the HCPCS code for “Unclassified drugs or biologicals” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
C9399Unclassified drugs or biologicals
Short description: Unclassified drugs or biolog
HCPCS · United States
Medicare details
The indicators CMS publishes with C9399 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- Statute
- ASC
- Approved for ambulatory surgical centers
- Type of service
- Medical care
- BETOS category
- Other drugs
- Coverage statute
- 621MMA
- Added
- Jan 1, 2004
Where C9399 sits
- 1C codesOutpatient prospective payment system
- 2Active code C9399Unclassified drugs or biologicals
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code C9399 mean?
C9399 is the HCPCS code for “Unclassified drugs or biologicals” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover C9399?
CMS lists C9399’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Statute”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside C9399
All C codesC9359Porous purified collagen matrix bone void filler (integra mozaik osteoconductive scaffold putty, integra os osteoconductive scaffold putty), per 0.5 ccC9360Dermal substitute, native, non-denatured collagen, neonatal bovine origin (surgimend collagen matrix), per 0.5 square centimetersC9361Collagen matrix nerve wrap (neuromend collagen nerve wrap), per 0.5 centimeter lengthC9362Porous purified collagen matrix bone void filler (integra mozaik osteoconductive scaffold strip), per 0.5 ccC9363Skin substitute, integra meshed bilayer wound matrix, per square centimeterC9364Porcine implant, permacol, per square centimeterC9407Iodine i-131 iobenguane, diagnostic, 1 millicurieC9408Iodine i-131 iobenguane, therapeutic, 1 millicurieC9441Injection, ferric carboxymaltose, 1 mgC9442Injection, belinostat, 10 mgC9443Injection, dalbavancin, 10 mgC9444Injection, oritavancin, 10 mg