C9399 – Unclassified drugs or biologicals

HCPCS Level II code · C codes: Outpatient PPS (Hospital Outpatient)

Active code Special coverage instructions apply

HCPCS codeC9399
Long description
Unclassified drugs or biologicals
Short description
Unclassified drugs or biolog
Pricing indicator
53 Statute
Medicare coverage
D Special coverage instructions apply
BETOS category
O1E Other drugs
ASC
Approved for ambulatory surgical centers
Added
January 1, 2004
Last change
January 1, 2004 – No change

Frequently asked questions

What is HCPCS code C9399?

C9399 is a HCPCS Level II code for unclassified drugs or biologicals.

Does Medicare cover C9399?

The HCPCS file lists coverage code D: Special coverage instructions apply. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby C codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.