A08.4
Viral intestinal infection, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 5 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 6 never code together
A08code
A00-B99chapter
Excludes1
- certain localized infections - see body system-related chapters
Excludes2
- carrier or suspected carrier of infectious disease (Z22.-)Z22.-
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
- infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
- influenza and other acute respiratory infections (J00-J22)J00-J22
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 5
Index entries leading here 6
- Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) K52.9
- Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) A09
- viral A08.4
- Flu — see also Influenza
- intestinal NEC A08.4
- Gastritis (simple) K29.70
- viral NEC A08.4
- Gastroduodenitis K29.90
- virus, viral A08.4
- Gastroenteritis (acute) (chronic) (noninfectious) K52.9
- viral NEC A08.4
Alongside this code 5 same parent — A08
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.