1F03.1

ICD-11 MMS 2026-01

Measles complicated by encephalitis

Description

A disease caused by an infection with Morbillivirus that is complicated by an infection of the brain. This disease is characterised by symptoms of measles as well as inflammation of the brain. This disease may also present with fever, headache, poor appetite, vomiting, confusion, lethargy, or photophobia. Transmission is by haematogenous spread to the brain after inhalation of infected respiratory secretions, by airborne transmission, or by direct contact. Confirmation is by detection of Morbillivirus RNA or measles-specific IgM antibodies.

Index terms

  • Measles complicated by encephalitis
  • Encephalitis due to Morbillivirus
  • Post measles encephalitis
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  • Postmeasles encephalomyelitis

Exclusions from above levels

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

Sibling codes

  • 1F03.0 – Measles without complication
  • 1F03.2 – Measles complicated by meningitis
  • 1F03.Y – Measles with other complications

Foundation entity

Measles complicated by encephalitis – http://id.who.int/icd/entity/844511898

Part of: 1F03: Measles › 01: Certain infectious or parasitic diseases