ICD-10 Code A08.19 – Acute gastroenteropathy due to other small round viruses (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A08.19 – Acute gastroenteropathy due to other small round viruses
What it is
This code identifies an acute intestinal infection caused by small round viruses other than those specifically named elsewhere. Use it when the record documents viral gastroenteritis or gastroenteropathy due to another small round virus.
Clinical signs
Typical findings include sudden onset diarrhea, nausea, vomiting, abdominal cramping, and general gastrointestinal upset. Clinical features vary; refer to documentation.
When to use this code
Use A08.19 when the provider clearly documents acute gastroenteropathy due to other small round viruses, or a similar viral cause not classified more specifically. It fits infectious diarrhea or gastroenteritis attributed to a small round virus when no more specific code is recorded. If the organism is not identified, check documentation before coding.
Do not use for
Do not use this code for noninfectious diarrhea, food poisoning, or gastroenteritis with a different identified cause. Do not use it when the record names a more specific viral agent or another diagnosis.
Coding tip
Code to the most specific documented viral cause; if the note only says “viral gastroenteritis,” check documentation.