1A31

ICD-11 MMS 2026-01

Giardiasis

Description

A condition caused by an infection with the protozoan parasite Giardia. This condition is characterised by gastroenteritis, or may be asymptomatic. Transmission is by the faecal-oral route from the ingestion of contaminated food or water. Confirmation is by identification of Giardia in a faecal sample.

Index terms

  • Giardiasis
  • giardia duodenalis dysentery
  • giardia intestinalis dysentery
Show allHide
  • giardia lamblia dysentery
  • giardial diarrhoea
  • lamblia dysentery
  • lambliasis
  • Duodenitis due to Giardia lamblia
  • Duodenitis due to Giardia intestinalis
  • Giardiasis of duodenum
  • Enteritis due to Giardia lamblia
  • Flagellate diarrhoea
  • giardia enteritis
  • giardial infectious enteritis
  • Colitis due to Giardia lamblia

Exclusions from above levels

  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1A30 – Infections due to Balantidium coli
  • 1A32 – Cryptosporidiosis
  • 1A33 – Cystoisosporiasis
  • 1A34 – Sarcocystosis
  • 1A35 – Blastocystosis
  • 1A36 – Amoebiasis
  • 1A3Y – Other specified protozoal intestinal infections
  • 1A3Z – Protozoal intestinal infections, unspecified

Foundation entity

Giardiasis – http://id.who.int/icd/entity/433310499

Part of: 01: Certain infectious or parasitic diseases