A08.1 Acute gastroenteropathy due to Norwalk agent and other small round viruses

Non-billable header with 2 child codes.

Applies from A08 Viral and other specified intestinal infections

Excludes1 (never code together)

• influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2)

Codes under A08.1

• A08.11 Acute gastroenteropathy due to Norwalk agent
• A08.19 Acute gastroenteropathy due to other small round viruses

Code annotations containing back-references to A08.1

Back-references to A08

• Type 1 Excludes: J09.X3 Influenza due to identified novel influenza A virus with gastrointestinal manifestations ("'intestinal flu' [viral gastroenteritis] (A08.-)")
• Type 1 Excludes: J10.2 Influenza due to other identified influenza virus with gastrointestinal manifestations ("'intestinal flu' [viral gastroenteritis] (A08.-)")
• Type 1 Excludes: J11.2 Influenza due to unidentified influenza virus with gastrointestinal manifestations ("'intestinal flu' [viral gastroenteritis] (A08.-)")
• Type 2 Excludes: P37 Other congenital infectious and parasitic diseases ("infectious neonatal diarrhea (A00-A09)")

Nearby codes

• A08 Viral and other specified intestinal infections
• A08.0 Rotaviral enteritis
• A08.1 Acute gastroenteropathy due to Norwalk agent and other small round viruses (this code)
• A08.11 Acute gastroenteropathy due to Norwalk agent
• A08.19 Acute gastroenteropathy due to other small round viruses
• A08.2 Adenoviral enteritis
• A08.3 Other viral enteritis
• A08.31 Calicivirus enteritis