I25.8Other forms of chronic ischemic heart disease

I25.8 is the ICD-10-CM diagnosis code for other forms of chronic ischemic heart disease. It belongs to category I25 (chronic ischemic heart disease), block I20-I25 (ischemic heart diseases) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

Within I25, choose I25.8 (Other forms of chronic ischemic heart disease) only when documentation doesn't support a more specific option: Atherosclerotic heart disease of native coronary artery (I25.1), old myocardial infarction (I25.2), aneurysm of heart (I25.3), coronary artery aneurysm and dissection (I25.4), ischemic cardiomyopathy (I25.5), Silent myocardial ischemia (I25.6), atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris (I25.7) and unspecified (I25.9).

To report this condition, pick the subcode that matches the documentation: I25.81 (pectoris), I25.82 (artery), I25.83 (plaque), I25.84 (lesion), I25.85 (dysfunction) and I25.89 (disease).

Use an additional code to identify: chronic total occlusion of coronary artery (I25.82), exposure to environmental tobacco smoke (Z77.22), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.