| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| M1 | M1 | M1 | ||
| Insular M2 | Insular M2 | Insular M2 | ||
| A1 | A1 | A1 | ||
| ICA | ICA | Internal Carotid Artery (ICA) | ||
| P1 | P1 | P1 | ||
| P2 | P2 | P2 | ||
| EC ICA | EC ICA | EC Internal Carotid Artery (ICA) | ||
| Vertebral | Vertebral | Vertebral | ||
| Basilar | Basilar | Basilar |