A08.4 Viral intestinal infection, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Viral enteritis NOS
• Viral gastroenteritis NOS
• Viral gastroenteropathy NOS

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)

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 008.8 Intestinal infection due to other organism, not elsewhere classified (approximate)

Code annotations containing back-references to A08.4

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)")

Diagnosis Index entries for A08.4

• Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › viral
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › infectious NOS › due to › virus NEC
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › viral
• Flu › intestinal NEC
• Gastritis (simple) › viral NEC
• Gastroduodenitis › virus, viral
• Gastroenteritis (acute) (chronic) (noninfectious) › viral NEC

Nearby codes

• A08.2 Adenoviral enteritis
• A08.3 Other viral enteritis
• A08.31 Calicivirus enteritis
• A08.32 Astrovirus enteritis
• A08.39 Other viral enteritis
• A08.4 Viral intestinal infection, unspecified (this code)
• A08.8 Other specified intestinal infections