Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene

**Includes:** - any condition classifiable to I70.61-, I70.62-, I70.63-, I70.64-, I70.65 - chronic limb-threatening ischemia of nonbiological bypass graft(s) of the extremities with gangrene - critical limb ischemia of nonbiological bypass graft(s) of the extremities with gangrene

**Use additional code:** - code to identify the severity of any ulcer (L97.-, L98.49-), if applicable