C9461 — Choline c 11, diagnostic, per study dose
C9461 is a HCPCS Level II code for choline c 11, diagnostic, per study dose. It belongs to the Outpatient Prospective Payment System section. It was terminated on December 31, 2016 and is not valid on new claims.
This code has been terminated
CMS terminated C9461 on December 31, 2016. 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 C9461
- Long descriptor
- Choline c 11, diagnostic, per study dose
- Short descriptor
- Choline c 11, diagnostic
- Added
- April 1, 2016
- Terminated
- December 31, 2016
- BETOS
- I1E
- 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 C9461
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If C9461 is not quite right, the correct code is very often within a few positions of it.
- C9453Injection, nivolumab, 1 mgterminated
- C9454Injection, pasireotide long acting, 1 mgterminated
- C9455Injection, siltuximab, 10 mgterminated
- C9456Injection, isavuconazonium sulfate, 1 mgterminated
- C9457Injection, sulfur hexafluoride lipid microsphere, per mlterminated
- C9458Florbetaben f18, diagnostic, per study dose, up to 8.1 millicuriesterminated
- C9459Flutemetamol f18, diagnostic, per study dose, up to 5 millicuriesterminated
- C9460Injection, cangrelor, 1 mg
- C9462Injection, delafloxacin, 1 mg
- C9463Injection, aprepitant, 1 mgterminated
- C9464Injection, rolapitant, 0.5 mgterminated
- C9465Hyaluronan or derivative, durolane, for intra-articular injection, per doseterminated
- C9466Injection, benralizumab, 1 mgterminated
- C9467Injection, rituximab and hyaluronidase, 10 mgterminated
- C9468Injection, factor ix (antihemophilic factor, recombinant), glycopegylated, rebinyn, 1 i.u.terminated
- C9469Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mgterminated
Questions about C9461
What is HCPCS code C9461?
C9461 is a HCPCS Level II code for choline c 11, diagnostic, per study dose. It sits in the Outpatient Prospective Payment System section.
Does Medicare cover C9461?
The CMS HCPCS file marks C9461 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 C9461 still valid?
No. C9461 was terminated on December 31, 2016 and should not be used on new claims.