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Volume 9, Number 2—February 2003

Research

Viral Encephalitis in England, 1989–1998: What Did We Miss?

Katy L. Davison*Comments to Author , Natasha S. Crowcroft*, Mary E. Ramsay*, David W.G. Brown†, and Nick J Andrews*
Author affiliations: *Public Health Laboratory Service Communicable Disease Surveillance Centre, London, United Kingdom; †Public Health Laboratory Service Virus Reference Division, London, United Kingdom

Main Article

Table 1

Diagnostic codes used to identify cases of viral encephalitis in hospital episode statistics

Encephalitis diagnosis
ICD-9a
ICD-10a
Specific diagnosis: Exotic virus 0620–0629, 0630–0638, 064, 0661, 0622, 3233 A830–A839, A840–A849, A852
Herpes simplex virus
0543
B004
Varicella-zoster virus 1
Undefined
B011, B020
Measles virus
0550
B050
Mumps
0722
B262
Rubella
0560, 0567
B060
Lymphocytic choriomeningitis virus
0490, 3126
A872
Adenovirus
Undefined
A851
Other
0498, 3234
A858
Nonspecific diagnosis: Unspecified 0499, 3239 A86, G051

aICD, International Classification of Disease.

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