| 031L09J | Bypass Left Internal Carotid Artery to Right Extracranial Artery with Autologous Venous Tissue, Open Approach |
| 031L09K | Bypass Left Internal Carotid Artery to Left Extracranial Artery with Autologous Venous Tissue, Open Approach |
| 031L0AJ | Bypass Left Internal Carotid Artery to Right Extracranial Artery with Autologous Arterial Tissue, Open Approach |
| 031L0AK | Bypass Left Internal Carotid Artery to Left Extracranial Artery with Autologous Arterial Tissue, Open Approach |
| 031L0JJ | Bypass Left Internal Carotid Artery to Right Extracranial Artery with Synthetic Substitute, Open Approach |
| 031L0JK | Bypass Left Internal Carotid Artery to Left Extracranial Artery with Synthetic Substitute, Open Approach |
| 031L0KK | Bypass Left Internal Carotid Artery to Left Extracranial Artery with Nonautologous Tissue Substitute, Open Approach |
| 031L0ZJ | Bypass Left Internal Carotid Artery to Right Extracranial Artery, Open Approach |
| 031L0ZK | Bypass Left Internal Carotid Artery to Left Extracranial Artery, Open Approach |
