1C85

ICD-11 MMS 2026-01

Japanese encephalitis

Description

A disease of the brain, caused by an infection with flavivirus. This disease is characterised by fever, headache, meningism, hyperexcitability, or decreased consciousness. This disease may also present with neurological signs such as cranial nerve palsies, tremor and ataxia, parkinsonism, or upper limb paralysis. Transmission is through the bite of an infected mosquito. Confirmation is by identification of flavivirus in a serum sample or cerebrospinal fluid.

Index terms

  • Japanese encephalitis
  • B type encephalitis
  • JBE - [Japanese B encephalitis}
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  • JE - [Japanese encephalitis]
  • Japanese B encephalitis
  • Japanese encephalitis virus disease
  • Russian autumnal encephalitis

Exclusions from above levels

  • 1D80 – Mumps
  • 1D82 – Cytomegaloviral disease
  • 1E90 – Varicella
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  • 1E91 – Zoster
  • 1F00 – Herpes simplex infections
  • 1F02 – Rubella
  • 1F03 – Measles
  • http://id.who.int/icd/entity/1959883044 – Dengue
  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1C80 – Viral encephalitis, not elsewhere classified
  • 1C81 – Acute poliomyelitis
  • 1C82 – Rabies
  • 1C83 – Western equine encephalitis
  • 1C84 – Eastern equine encephalitis
  • 1C86 – St Louis encephalitis
  • 1C87 – Rocio viral encephalitis
  • 1C88 – Murray Valley encephalitis
  • 1C8B – California encephalitis
  • 1C8C – Venezuelan equine encephalitis
  • 1C8D – La Crosse encephalitis
  • 1C8E – Viral meningitis, not elsewhere classified
  • 1C8F – Lymphocytic choriomeningitis
  • 1C8G – Tick-borne encephalitis
  • 1C8H – Viral myelitis, not elsewhere classified
  • 1C8Y – Other specified viral infections of the central nervous system
  • 1C8Z – Viral infections of the central nervous system, unspecified

Foundation entity

Japanese encephalitis – http://id.who.int/icd/entity/961032639

Part of: 01: Certain infectious or parasitic diseases