049.8 VIRAL ENCEPHALITIS NEC

Code Information

Diagnosis Code: 049.8

Short Description: Viral encephalitis NEC

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

Code Classification:

  • Infectious and parasitic diseases (001–139)
    • Poliomyelitis and other non-arthropod-borne viral diseases of central nervous system (045-049)
      • 049 Other non-arthropod-borne viral diseases of central nervous system
        • 049.8 Viral encephalitis NEC

Code Version: 2015 ICD-9-CM

References to Index of Diseases and Injuries

The code 049.8 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • 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 (see also Influenza) 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) (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
  • Late - see also condition
    • effect(s) (of) - see also condition
      • encephalitis or encephalomyelitis (conditions classifiable to 323) - see category 326
        • in infectious diseases 139.8
          • viral (conditions classifiable to 049.8, 049.9, 062-064) 139.0
      • viral encephalitis (conditions classifiable to 049.8, 049.9, 062-064) 139.0
  • 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

Crosswalk Information

The code 049.8 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
049.8 Right Arrow A85.0 Enteroviral encephalitis
A85.1 Adenoviral encephalitis
A85.8 Other specified viral encephalitis
A88.8 Other specified viral infections of central nervous system
This ICD-9 to ICD-10 data is based on the 2015 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

No. ICD-9 Code ICD-9 Description
1 049.0 Lymphocytic choriomeningitis
2 049.1 Meningitis due to adenovirus
3 049.9 Unspecified non-arthropod-borne viral diseases of central nervous system

This page was last updated on: 10/1/2014