I70.491 (Other atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg) compared with I70.492 (Other atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg), from the official CMS tabular data. I70.491 and I70.492 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. I70.491 and I70.492 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| I70.491Other atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg | I70.492Other atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg is a billable ICD-10-CM diagnosis code (I70.491). | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg is a billable ICD-10-CM diagnosis code (I70.492). |
| Includes | arteriolosclerosis arterial degeneration arteriosclerosis arteriosclerotic vascular disease | arteriolosclerosis arterial degeneration arteriosclerosis arteriosclerotic vascular disease |
| Use additional code | code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92) code to identify: exposure to environmental tobacco smoke (Z77.22) | code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92) code to identify: exposure to environmental tobacco smoke (Z77.22) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources