Adenovirus as the cause of diseases classified elsewhere

This code indicates that an adenovirus infection is the underlying cause of a disease process that is primarily classified under another ICD-10-CM code. It signifies a causal link between the adenovirus and a manifestation elsewhere in the body, rather than a direct adenovirus infection of the site. This is typically used when the adenovirus is identified as the etiology of a secondary condition.

Use this code when documentation explicitly states adenovirus as the causative agent for a condition classified by another code, such as conjunctivitis, gastroenteritis, or pneumonia. This code is always a secondary diagnosis, following the code for the specific disease manifestation. Documentation should clearly identify both the adenovirus and the resulting condition.

• Always sequence this code after the primary diagnosis code for the condition caused by the adenovirus.
• Ensure documentation specifies "adenovirus" and not just a general viral infection.
• Do not use this code if the adenovirus infection itself is the primary condition being treated; instead, use a code from B34.0 or B30.- for specific adenovirus infections.