C9021 — Injection, obinutuzumab, 10 mg
C9021 is a HCPCS Level II code for injection, obinutuzumab, 10 mg. It belongs to the Outpatient Prospective Payment System section. It was terminated on December 31, 2014 and is not valid on new claims.
This code has been terminated
CMS terminated C9021 on December 31, 2014. It stays in the file as history — a claim you are auditing from before that date may legitimately carry it — but it must not appear on a new claim. The adjacent codes below are the usual place to look for its replacement.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
The CMS record for C9021
- Long descriptor
- Injection, obinutuzumab, 10 mg
- Short descriptor
- Injection, obinutuzumab
- Added
- April 1, 2014
- Terminated
- December 31, 2014
- BETOS
- O1D
- Pricing indicator
- 53 — Other
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
When CMS retired it.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Statute.
Codes adjacent to C9021
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If C9021 is not quite right, the correct code is very often within a few positions of it.
- C8934Magnetic resonance angiography with contrast, upper extremity
- C8935Magnetic resonance angiography without contrast, upper extremity
- C8936Magnetic resonance angiography without contrast followed by with contrast, upper extremity
- C8937Computer-aided detection, including computer algorithm analysis of breast mri image data for lesion detection/characterization, pharmacokinetic analysis, with further physician review for interpretation (list separately in addition to code for primary procedure)
- C8957Intravenous infusion for therapy/diagnosis; initiation of prolonged infusion (more than 8 hours), requiring use of portable or implantable pump
- C9014Injection, cerliponase alfa, 1 mgterminated
- C9015Injection, c-1 esterase inhibitor (human), haegarda, 10 unitsterminated
- C9016Injection, triptorelin extended release, 3.75 mgterminated
- C9022Injection, elosulfase alfa, 1mgterminated
- C9023Injection, testosterone undecanoate, 1 mgterminated
- C9024Injection, liposomal, 1 mg daunorubicin and 2.27 mg cytarabineterminated
- C9025Injection, ramucirumab, 5 mgterminated
- C9026Injection, vedolizumab, 1 mgterminated
- C9027Injection, pembrolizumab, 1 mgterminated
- C9028Injection, inotuzumab ozogamicin, 0.1 mgterminated
- C9029Injection, guselkumab, 1 mgterminated
Questions about C9021
What is HCPCS code C9021?
C9021 is a HCPCS Level II code for injection, obinutuzumab, 10 mg. It sits in the Outpatient Prospective Payment System section.
Does Medicare cover C9021?
The CMS HCPCS file marks C9021 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
Is C9021 still valid?
No. C9021 was terminated on December 31, 2014 and should not be used on new claims.