C9023 — Injection, testosterone undecanoate, 1 mg
C9023 is a HCPCS Level II code for injection, testosterone undecanoate, 1 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 C9023 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 C9023
- Long descriptor
- Injection, testosterone undecanoate, 1 mg
- Short descriptor
- Inj testosterone undecanoate
- Added
- October 1, 2014
- Terminated
- December 31, 2014
- BETOS
- O1E
- 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 C9023
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If C9023 is not quite right, the correct code is very often within a few positions of it.
- 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
- C9021Injection, obinutuzumab, 10 mgterminated
- C9022Injection, elosulfase alfa, 1mgterminated
- 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
- C9030Injection, copanlisib, 1 mgterminated
- C9031Lutetium lu 177, dotatate, therapeutic, 1 mciterminated
Questions about C9023
What is HCPCS code C9023?
C9023 is a HCPCS Level II code for injection, testosterone undecanoate, 1 mg. It sits in the Outpatient Prospective Payment System section.
Does Medicare cover C9023?
The CMS HCPCS file marks C9023 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 C9023 still valid?
No. C9023 was terminated on December 31, 2014 and should not be used on new claims.