Calicivirus enteritis

This code represents an inflammation of the small intestine caused specifically by a calicivirus infection. Patients typically present with acute gastroenteritis symptoms such as nausea, vomiting, diarrhea, and abdominal cramps. The illness is generally self-limiting but can lead to dehydration, especially in vulnerable populations.

Use this code when documentation explicitly states a diagnosis of calicivirus enteritis or gastroenteritis confirmed to be caused by a calicivirus. This often follows laboratory confirmation (e.g., stool studies) or a strong clinical suspicion in an outbreak setting where calicivirus is identified as the causative agent.

• Ensure the documentation specifies "calicivirus" as the causative agent; do not use for unspecified viral enteritis.
• Consider co-reporting codes for dehydration (E86.0) if documented, especially in severe cases.
• Differentiate from other viral enteritis codes (e.g., rotavirus, adenovirus) based on specific pathogen identification.