Table 1.
ICD-10 code diagnosis and the number of cases with a laboratory confirmed pathogen diagnosis
| ICD-10 Code | Code name | Cases | Pathogen confirmed by laboratory test |
|---|---|---|---|
| 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 | |