Astrovirus enteritis

This code represents an acute inflammation of the small intestine caused by astrovirus infection. Patients typically present with symptoms such as watery diarrhea, vomiting, fever, and abdominal pain, often resolving within a few days. It is a common cause of gastroenteritis, particularly in young children and immunocompromised individuals.

Use this code when documentation explicitly states a diagnosis of astrovirus enteritis or gastroenteritis confirmed by laboratory testing (e.g., stool antigen test, PCR). It is appropriate for cases where astrovirus is identified as the causative agent of the intestinal infection.

• Ensure documentation specifies "astrovirus" as the pathogen; do not use for unspecified viral enteritis.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter.
• Do not confuse with other viral enteritis codes (e.g., rotavirus, adenovirus) unless astrovirus is specifically identified.