| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| Lobar | Lobar | Involves more than half of one lobe | ||
| Hemisphere | Hemisphere | Involves an entire supratentorial hemisphere | ||
| Global | Global | Involves the entire brain | ||
| Regional | Regional | Regional | ||
| Multifocal | Multifocal | Multifocal |