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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Infectious And Parasitic Diseases 001-139 > Arthropod-Borne Viral Diseases 060-066 > Tick-Borne Viral Encephalitis 063.* > 2008 ICD-9-CM Diagnosis 063.9 Tick-borne viral encephalitis unspecified Encephalitis caused by neurotropic viruses that are transmitted via the bite of TICKS. In Europe, the diseases are caused by ENCEPHALITIS VIRUSES, TICK-BORNE, which give rise to Russian spring-summer encephalitis, central European encephalitis, louping ill encephalitis, and related disorders. Powassan encephalitis occurs in North America and Russia and is caused by the Powassan virus. ASEPTIC MENINGITIS and rarely encephalitis may complicate COLORADO TICK FEVER which is endemic to mountainous regions of the western United States. (From Joynt, Clinical Neurology, 1996, Ch26, pp14-5) 063.9 is a specific code that can be used to specify a diagnosis 063.9 contains 3 index entries View the ICD-9-CM Volume 1 063.* hierarchy Index entries containing 063.9: Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9 tick-borne 063.9 viral, virus 049.9 arthropod-borne NEC 064 tick-borne 063.9 biundulant 063.2 Central European 063.2 Czechoslovakian 063.2 diphasic meningoencephalitis 063.2 Far Eastern 063.0 Langat 063.8 louping ill 063.1 Powassan 063.8 Russian spring-summer (taiga) 063.0 specified type NEC 063.8 Infection, infected, infective (opportunistic) 136.9 virus, viral 079.99 encephalitis 049.9 tick-borne 063.9 specified type NEC 063.8