Atherosclerosis of native arteries of extremities with gangrene

**Includes:** - any condition classifiable to I70.21-, I70.22-, I70.23-, I70.24-, and I70.25- - chronic limb-threatening ischemia of native arteries of extremities with gangrene - critical limb ischemia of native arteries of extremities with gangrene

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