Influenza immunization was not administered for reasons documented by clinician (e.g., patient allergy or other medical reasons, patient declined or other patient reasons, vaccine not available or other system reasons)

Still listed by CMS but carries a termination date, so it is not valid for a current date of service.

Terminated with effect from 2024-12-31. First published 2023. CMS still lists this code in the current quarterly file - it carries a termination date rather than being removed.