ICD-10-CM > I00-I99 > I70-I79 > I70 > I70.5 > I70.55 I70.55 Atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulceration Billable/Specific Copy Code Copy Description Includes any condition classifiable to I70.518, I70.528, and I70.538 Use Additional code to identify severity of ulcer (L98.49)