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A08.4 — Viral intestinal infection, unspecified
A08.4
What this code means
A gut infection caused by a virus, producing vomiting and watery diarrhoea, usually settling within a few days.
Also called: viral gastroenteritis, stomach flu, viral intestinal infection.
When this code is used
Used for viral intestinal infection when the exact virus is not specified.
Where it sits in ICD-10-CM
Code A08.4 belongs to Chapter 1: Infectious and parasitic diseases, which covers codes A00–B99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Frequently asked questions
What is ICD-10-CM code A08.4?
A08.4 is the ICD-10-CM diagnosis code for “Viral intestinal infection, unspecified”. A gut infection caused by a virus, producing vomiting and watery diarrhoea, usually settling within a few days.
When is code A08.4 used?
Used for viral intestinal infection when the exact virus is not specified. It belongs to Chapter 1 of ICD-10-CM (Infectious and parasitic diseases).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.