ICD-10-CM > I00-I99 > I20-I25 > I25 > I25.1 > I25.11 > I25.110 I25.110 Atherosclerotic heart disease of native coronary artery with unstable angina pectoris Billable/Specific Copy Code Copy Description Type 1 Excludes unstable angina without atherosclerotic heart disease (I20.0)