| G00 |
| Bacterial meningitis, not elsewhere classified |
| G01 |
| Meningitis in bacterial diseases classified elsewhere |
| G02 |
| Meningitis in other infectious and parasitic diseases classified elsewhere |
| G03 |
| Meningitis due to other and unspecified causes |
| G04 |
| Encephalitis, myelitis and encephalomyelitis |
| G05 |
| Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere |
| G06 |
| Intracranial and intraspinal abscess and granuloma |
| G07 |
| Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere |
| G08 |
| Intracranial and intraspinal phlebitis and thrombophlebitis |
| G09 |
| Sequelae of inflammatory diseases of central nervous system |