1F84

ICD-11 MMS 2026-01

Opisthorchiasis

Description

A disease caused by an infection with the parasitic worm Opisthorchis. This disease is commonly asymptomatic. In mild cases, this disease may present with dyspepsia, abdominal pain, diarrhoea, or constipation; in severe cases, this disease may present with hepatomegaly and malnutrition; in rare cases, this disease may present with cholangitis, cholecystitis, and cholangiocarcinoma. Transmission is by ingestion of infected undercooked freshwater fish. Confirmation is by of identification Opisthorchis in a faecal sample.

Index terms

  • Opisthorchiasis
  • cat liver fluke disease
  • cat liver fluke fever
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  • cat liver fluke infestation
  • infection by cat liver fluke
  • infection by opisthorchis
  • opisthorchiosis
  • opisthorchis infestation
  • Opisthorchiasis due to Opisthorchis viverrini
  • infection by opisthorchis viverrini
  • Opisthorchiasis due to Opisthorchis felineus

Exclusions from above levels

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

Sibling codes

  • 1F80 – Clonorchiasis
  • 1F81 – Dicrocoeliasis
  • 1F82 – Fascioliasis
  • 1F83 – Fasciolopsiasis
  • 1F85 – Paragonimiasis
  • 1F86 – Schistosomiasis
  • 1F8Y – Other specified diseases due to trematodes
  • 1F8Z – Diseases due to trematodes, unspecified

Foundation entity

Opisthorchiasis – http://id.who.int/icd/entity/1401769984

Part of: 01: Certain infectious or parasitic diseases