I70.63 (Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration) compared with I70.64 (Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration), from the official CMS tabular data. I70.63 and I70.64 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. I70.63 and I70.64 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.
| I70.63Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration | I70.64Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration is a non-billable ICD-10-CM category code (I70.63). | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration is a non-billable ICD-10-CM category code (I70.64). |
| Includes | any condition classifiable to I70.611 and I70.621 chronic limb-threatening ischemia of nonbiological bypass graft(s) of the right leg with ulceration critical limb ischemia of nonbiological bypass graft(s) of the right leg with ulceration arteriolosclerosis | any condition classifiable to I70.612 and I70.622 chronic limb-threatening ischemia of nonbiological bypass graft(s) of the left leg with ulceration critical limb ischemia of nonbiological bypass graft(s) of the left leg with ulceration arteriolosclerosis |
| Use additional code | code to identify severity of ulcer (L97.-) code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92) code to identify: | code to identify severity of ulcer (L97.-) code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92) code to identify: |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources