Other viral infections of central nervous system, not elsewhere classified - A88
Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.
Type 1 Excludes:
- viral encephalitis NOS (A86)
- viral meningitis NOS (A87.9)
These ranges represents subcategories of Other viral infections of central nervous system, not elsewhere classified. The "A88" signifies that these are the diseases within this broad category.