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Definition: A inflammation of the brain. Symptoms include headache, fever, vomiting, stiff neck and lethargy.

Pronunciation: en-sef″ah-li´tis

Body System: Nervous

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ICD10 Codes Containing Term: encephalitis

A39.81 Meningococcal encephalitis
A42.82 Actinomycotic encephalitis
A50.42 Late congenital syphilitic encephalitis
A52.14 Late syphilitic encephalitis
A83.0 Japanese encephalitis
A83.1 Western equine encephalitis
A83.2 Eastern equine encephalitis
A83.3 St Louis encephalitis
A83.4 Australian encephalitis
A83.5 California encephalitis
A83.8 Other mosquito-borne viral encephalitis
A83.9 Mosquito-borne viral encephalitis, unspecified
A84.0 Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]
A84.1 Central European tick-borne encephalitis
A84.8 Other tick-borne viral encephalitis
A84.9 Tick-borne viral encephalitis, unspecified
A85.0 Enteroviral encephalitis
A85.1 Adenoviral encephalitis
A85.2 Arthropod-borne viral encephalitis, unspecified
A85.8 Other specified viral encephalitis
A86. Unspecified viral encephalitis
A92.31 West Nile virus infection with encephalitis
B00.4 Herpesviral encephalitis
B01.11 Varicella encephalitis and encephalomyelitis
B02.0 Zoster encephalitis
B05.0 Measles complicated by encephalitis
B06.01 Rubella encephalitis
B10.01 Human herpesvirus 6 encephalitis
B10.09 Other human herpesvirus encephalitis
B26.2 Mumps encephalitis
B94.1 Sequelae of viral encephalitis
G04.00 Acute disseminated encephalitis and encephalomyelitis, unspecified
G04.01 Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
G04.02 Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
G04.81 Other encephalitis and encephalomyelitis
G04.90 Encephalitis and encephalomyelitis, unspecified
G05.3 Encephalitis and encephalomyelitis in diseases classified elsewhere
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