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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Infectious And Parasitic Diseases 001-139 > Poliomyelitis And Other Non-Arthropod-Borne Viral Diseases Of Central Nervous System 045-049 > Other Non-Arthropod-Borne Viral Diseases Of Central Nervous System 049.* >

2008 ICD-9-CM Diagnosis 049.8

Other specified non-arthropod-borne viral diseases of central nervous system

 On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.

The 2009 version of ICD-9-CM 049.8 can be accessed here.

  • 049.8 is a specific code that can be used to specify a diagnosis
  • 049.8 contains 38 index entries
  • View the ICD-9-CM Volume 1 049.* hierarchy

049.8 also known as:

  • Encephalitis:
    • acute:
      • inclusion body
      • necrotizing
    • epidemic
    • lethargica
    • Rio Bravo
  • von Economo's disease

049.8 excludes:

  • human herpesvirus 6 encephalitis (058.21)
  • other human herpesvirus encephalitis (058.29)


Index entries containing 049.8:

Akureyri disease (epidemic neuromyasthenia) 049.8
Chorea (gravis) (minor) (spasmodic) 333.5
  • electric 049.8
Cruchet's disease (encephalitis lethargica) 049.8
Disease, diseased - see also Syndrome
  • Akureyri (epidemic neuromyasthenia) 049.8
  • Cruchet's (encephalitis lethargica) 049.8
  • Dubini's (electric chorea) 049.8
  • Economo's (encephalitis lethargica) 049.8
  • Guertin's (electric chorea) 049.8
  • iceland (epidemic neuromyasthenia) 049.8
  • virus (filterable) NEC 078.89
    • central nervous system NEC 049.9
      • specified type NEC 049.8
    • nonarthropod-borne NEC 078.89
      • central nervous system NEC 049.9
        • specified NEC 049.8
  • von Economo's (encephalitis lethargica) 049.8
Dubini's disease (electric chorea) 049.8
Economo's disease (encephalitis lethargica) 049.8
Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9
  • acute - see also Encephalitis, viral
    • inclusional 049.8
    • inclusion body 049.8
    • necrotizing 049.8
  • endemic 049.8
  • epidemic 049.8
  • infectious (acute) (virus) NEC 049.8
  • influenzal 487.8 [323.41]
    • lethargic 049.8
  • lethargic (acute) (infectious) (influenzal) 049.8
  • lethargica 049.8
  • Mengo 049.8
  • myoclonic 049.8
  • Rio Bravo 049.8
  • Vienna type 049.8
  • viral, virus 049.9
    • specified type NEC 049.8
  • von Economo's 049.8
Encephalomyelitis (chronic) (granulomatous) (hemorrhagic necrotizing, acute) (myalgic, benign) (see also Encephalitis) 323.9
  • abortive disseminated 049.8
  • funicularis infectiosa 049.8
  • Munch-Peterson's 049.8
Guertin's disease (electric chorea) 049.8
Iceland disease (epidemic neuromyasthenia) 049.8
Meningomyelitis (see also Meningoencephalitis) 323.9
  • lethargic 049.8
Neuromyasthenia (epidemic) 049.8
Vienna-type encephalitis 049.8
von Economo's disease (encephalitis lethargica) 049.8