1A23

ICD-11 MMS 2026-01

Enteritis due to Norovirus

Description

A disease of the gastrointestinal tract, caused by an infection with norovirus. This disease is characterised by acute onset of vomiting, non-haemorrhagic diarrhoea, and abdominal pain. Transmission is by ingestion of contaminated food or water, direct contact, or through fomites. Confirmation is by identification of norovirus.

Index terms

  • Enteritis due to Norovirus
  • Noroviral enteritis
  • acute gastroenteropathy due to Norwalk agent
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  • epidemic nausea
  • epidemic viral gastroenteritis due to Norwalk virus
  • epidemic vomiting
  • epidemic vomiting syndrome
  • epidemic winter vomiting disease
  • small round structured virus enteritis
  • viral gastroenteritis due to Norwalk agent
  • winter vomiting

Exclusions from above levels

  • 1E32 – influenza with involvement of gastrointestinal tract
  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1A20 – Enteritis due to Adenovirus
  • 1A21 – Gastroenteritis due to Astrovirus
  • 1A22 – Gastroenteritis due to Rotavirus
  • 1A24 – Intestinal infections due to Cytomegalovirus
  • 1A2Y – Other specified viral intestinal infections
  • 1A2Z – Viral intestinal infections, unspecified

Foundation entity

Enteritis due to Norovirus – http://id.who.int/icd/entity/1465325727

Part of: 01: Certain infectious or parasitic diseases