1C80

ICD-11 MMS 2026-01

Viral encephalitis, not elsewhere classified

Index terms

  • Viral encephalitis, not elsewhere classified
  • acute haemorrhagic encephalitis
  • acute idiopathic encephalitis
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  • chronic viral encephalitis
  • endemic encephalitis
  • equine encephalitis
  • mosquito-borne encephalitis
  • nonepidemic encephalitis
  • postviral encephalitis NOS
  • subacute viral encephalitis
  • viral encephalitis NOS
  • viral haemorrhagic encephalitis
  • viral nonepidemic encephalitis
  • Encephalitis due to Alphavirus
  • Encephalitis due to Me Tri virus
  • Encephalitis due to Bunyaviridae
  • Cache Valley encephalitis
  • Jamestown canyon virus encephalitis
  • Encephalitis due to Sin nombre virus
  • Encephalitis due to Toscana virus
  • Encephalitis due to Puumala virus
  • Encephalitis due to Enterovirus
  • Enteroviral encephalitis
  • Enteroviral encephalomyelitis
  • Enteroviral encephalitis, myelitis or encephalomyelitis
  • Encephalitis due to Parechovirus
  • Encephalitis due to Vilyuisk human encephalitis virus
  • Encephalitis due to poliovirus
  • Encephalitis due to Coxsackie virus group A or B
  • Encephalitis due to enterovirus types 68-71
  • Encephalitis due to echo virus
  • Encephalitis due to Flavivirus
  • Encephalitis due to Alfuy virus
  • Encephalitis due to Kokobera virus
  • Encephalitis due to Koutango virus
  • Encephalitis due to Louping ill virus
  • Negishi virus encephalitis
  • Encephalitis due to Stratford virus
  • Encephalitis due to Usutu virus
  • Far Eastern European encephalitis
  • Powassan encephalitis
  • Powassan virus disease
  • Encephalitis due to Paramyxoviridae
  • Encephalitis due to Orthopoxvirus
  • Encephalitis due to Polyoma virus
  • Encephalitis due to BK virus
  • Encephalitis due to Respiratory syncytial virus
  • Encephalitis due to Retroviridae
  • Encephalitis due to Human T-lymphotropic virus Type 2
  • Encephalitis due to human T-lymphotropic virus Type I
  • Encephalitis due to Rhabdoviridae
  • Encephalitis due to Lyssa viruses
  • Encephalitis due to Lagos bat virus
  • Encephalitis due to Mokola virus
  • Encephalitis due to European Bat Lyssavirus types 1 or 2
  • Encephalitis due to Australian Bat Lyssavirus
  • Encephalitis due to Roseolovirus
  • Encephalitis due to Vesiculovirus
  • Encephalitis due to Rubulavirus
  • Ilheus virus encephalitis
  • Louping ill encephalitis
  • Louping ill
  • Encephalitis lethargica
  • Vienna encephalitis
  • Von Economo's disease
  • Von Economo-Cruchet disease
  • Von economo encephalitis
  • Rio bravo encephalitis
  • rb - [rio bravo] fever
  • rio bravo fever
  • Postviral encephalomyelitis
  • Bornavirus encephalitis
  • Borna disease
  • Borna virus encephalitis
  • Viral encephalomyelitis, not elsewhere classified
  • Viral encephalomyelitis NEC
  • Viral encephalomyelitis NOS
  • Encephalitis due to Human herpesvirus 7
  • Subacute adenoviral encephalitis
  • Mosquito-borne viral meningoencephalitis
  • Viral meningoencephalitis, not elsewhere classified
  • viral meningoencephalitis NOS
  • Encephalitis due to Herpes B virus
  • Simian B disease
  • Simian B disorder
  • encephalitis due to Herpesvirus simiae
  • Encephalitis due to Human herpesvirus 6
  • Encephalitis due to Epstein-Barr virus
  • encephalitis due to Human herpesvirus 4

Inclusions

  • Viral meningoencephalitis, not elsewhere classified

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

Foundation children elsewhere

  • 1C83 – Western equine encephalitis
  • 1C84 – Eastern equine encephalitis
  • 1C85 – Japanese encephalitis
  • 1C86 – St Louis encephalitis
  • 1C87 – Rocio viral encephalitis
  • 1C88 – Murray Valley encephalitis
  • 1C8B – California encephalitis
  • 1C8C – Venezuelan equine encephalitis
  • 1C8D – La Crosse encephalitis
  • 1C8G – Tick-borne encephalitis
  • 1D43 – Oropouche virus disease
  • 1D61.0 – Argentinian haemorrhagic fever
  • 1D61.1 – Bolivian haemorrhagic fever
  • 1D61.2 – Lassa fever
  • 1D80.3 – Encephalitis due to mumps virus
  • 1E90.2 – Varicella encephalitis
  • 1F03.1 – Measles complicated by encephalitis
  • 1G84 – Sequelae of viral encephalitis

Sibling codes

  • 1C81 – Acute poliomyelitis
  • 1C82 – Rabies
  • 1C83 – Western equine encephalitis
  • 1C84 – Eastern equine encephalitis
  • 1C85 – Japanese 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

Viral encephalitis, not elsewhere classified – http://id.who.int/icd/entity/956664712

Allowed postcoordination axes

Part of: 01: Certain infectious or parasitic diseases