| Source | Code | Name | Case count | Share of cases (%) |
|---|---|---|---|---|
| OPER_IN | OPER_IN_NOM(AAC00) | Ligature of intracranial aneurysm | 830 | |
| OPER_IN | OPER_IN_FHL(2161) | Neck ligation, big brain | 190 | |
| OPER_IN | OPER_IN_NOM(AAL00) | Endovascular occlusion of intracranial aneurysm | 106 | |
| OPER_OUT | OPER_OUT_NOM(AAC00) | Ligature of intracranial aneurysm | 12 | |
| OPER_IN | OPER_IN_NOM(AAC10) | Reinforcement of intracranial aneurysm wall | 8 | |
| OPER_OUT | OPER_OUT_NOM(AAL00) | Endovascular occlusion of intracranial aneurysm | 8 | |
| OPER_IN | OPER_IN_NOM(AAC99) | Other operation for aneurysm or other intracranial vascular lesion | 6 |