| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| OPER_IN | OPER_IN_NOM(AAC00) | Ligature of intracranial aneurysm | 1393 | |
| OPER_IN | OPER_IN_FHL(2161) | Neck ligation, big brain | 403 | |
| OPER_IN | OPER_IN_NOM(AAL00) | Endovascular occlusion of intracranial aneurysm | 293 | |
| OPER_OUT | OPER_OUT_NOM(AAC00) | Ligature of intracranial aneurysm | 24 | |
| OPER_OUT | OPER_OUT_NOM(AAL00) | Endovascular occlusion of intracranial aneurysm | 16 | |
| OPER_IN | OPER_IN_FHL(2164) | Crotigree | 15 | |
| OPER_IN | OPER_IN_NOM(AAC10) | Reinforcement of intracranial aneurysm wall | 12 | |
| OPER_IN | OPER_IN_NOM(AAC99) | Other operation for aneurysm or other intracranial vascular lesion | 8 | |
| OPER_IN | OPER_IN_FHL(2162) | Wall reinforcement, big brain | 7 | |
| OPER_IN | OPER_IN_FHL(2163) | Proxies. Vascular ligation, big brain | 6 |