Table 1 ICD-10 code diagnosis and the number of cases with a laboratory confirmed pathogen diagnosis

Codes for "known" pathogens

A321

Listerial meningitis & meningoencephalitis

3

3

A858

Other specified viral encephalitis

3

2

B004

Herpesviral encephalitis

10

2

B011

Varicella encephalitis

1

1

B020

Zoster encephalitis

3

1

G052

Encephalitis, myelitis & encephalomyelitis-other infectious and parasitic diseases

1

0

G040

Acute disseminated encephalitis

1

N/A

Subtotal for "known" pathogens

22

9

Codes for "unknown" pathogens

G048

Other encephalitis, myelitis and encephalomyelitis

1

N/A

G049

Encephalitis, myelitis and encephalomyelitis, unspecified

10

N/A

A86

Unspecified viral encephalitis

41

N/A

Subtotal ("unknown" pathogens)

52

N/A

Grand Total

74

9