ICD-10 Code A08.32 – Astrovirus Enteritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A08.32 – Astrovirus enteritis
What it is
A08.32 identifies enteritis caused by astrovirus, a viral infection that affects the intestines. Use it when documentation specifies astrovirus as the cause of acute gastroenteritis or enteritis.
Clinical signs
Typical features include diarrhea, nausea, vomiting, abdominal pain, and sometimes fever. Clinical features vary; refer to documentation, and confirm that astrovirus is named as the etiologic agent.
When to use this code
Use this code when the provider documents astrovirus enteritis, astrovirus gastroenteritis, or intestinal infection due to astrovirus. It is appropriate when the record links the illness to astrovirus rather than a nonspecific viral cause. Check documentation if the organism is not clearly identified.
Do not use for
Do not use A08.32 for gastroenteritis with no documented cause or for infections due to another virus or organism. If the note only says “viral enteritis,” choose a more general code unless astrovirus is confirmed.
Coding tip
Code A08.32 only when astrovirus is explicitly documented; otherwise, assign the most specific confirmed diagnosis available.