ICD-10-CM > I00-I99 > I20-I25 > I25 > I25.7 > I25.72 > I25.720 I25.720 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris Billable/Specific Copy Code Copy Description Type 1 Excludes unstable angina without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.0)