“…However, a ≥20% 10-year ASCVD risk for a composite 3-point major atherosclerotic CV event of nonfatal myocardial infarction, nonfatal stroke, or CV death can serve as an arbitrary definition of patients with very high risk [ 21 ]. Thus, following the practice of the Taiwanese Secondary Prevention for Patients with Atherosclerotic Disease Registry [ 22 , 23 ], we replaced ASCVD with the following ICD-9-CM codes: AMI, 410; other acute and subacute forms of ischemic heart disease, 411; old myocardial infarction, 412; angina pectoris, 413; other forms of chronic ischemic disease, 414; hemorrhagic stroke, 430–432; ischemic stroke, 433–437; peripheral artery disease, 440.0, 440.2, 440.3, 440.8, 440.9, 443, 444.0, 444.22, 444.8, 447.8, and 447.9; arterial revascularization, 36.0–36.3; and operations on heart vessels, 36.9 [ 23 , 24 ]. The major atherosclerotic CV event was replaced with ICD-9-CM codes for all-cause mortality as follows: CV death, 390–459; nonfatal stroke, 430–438; nonfatal heart failure, 428; and AMI, 410.…”