A08.1 - Acute gastroenteropathy due to Norwalk agent and other small round viruses A08 - Viral and other specified intestinal infections A08.1 - Acute gastroenteropathy due to Norwalk agent and other small round viruses
A08.11 - Acute gastroenteropathy due to Norwalk agent A08.19 - Acute gastroenteropathy due to other small round viruses