Q5123 – Injection, rituximab-arrx, biosimilar, (riabni), 10 mg

HCPCS Level II code · Q codes: Temporary Codes

Active code Carrier judgment

HCPCS codeQ5123
Long description
Injection, rituximab-arrx, biosimilar, (riabni), 10 mg
Short description
Inj. riabni, 10 mg
Pricing indicator
51 Drugs
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
O1D Chemotherapy
ASC
Approved for ambulatory surgical centers
Added
July 1, 2021
Last change
July 1, 2021 – No change

Frequently asked questions

What is HCPCS code Q5123?

Q5123 is a HCPCS Level II code for injection, rituximab-arrx, biosimilar, (riabni), 10 mg.

Does Medicare cover Q5123?

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

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