A08 Viral and other specified intestinal infections

Category / Non-billable header 11 subcodes

Block: Intestinal infectious diseases (A00-A09)

Excludes 1 (cannot be coded together)

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

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
A08..0 Rotaviral enteritis Yes
A08..1 Acute gastroenteropathy due to Norwalk agent and other small round viruses No
A08..11 Acute gastroenteropathy due to Norwalk agent Yes
A08..19 Acute gastroenteropathy due to other small round viruses Yes
A08..2 Adenoviral enteritis Yes
A08..3 Other viral enteritis No
A08..31 Calicivirus enteritis Yes
A08..32 Astrovirus enteritis Yes
A08..39 Other viral enteritis Yes
A08..4 Viral intestinal infection, unspecified Yes
A08..8 Other specified intestinal infections Yes

Last reviewed: September 2026