I25.8 — Other forms of chronic ischemic heart disease
I25.8 is a non-billable header ICD-10-CM code for other forms of chronic ischemic heart disease. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 inherited from the categories above I25.8
Also inherited, and the opposite of Excludes1: these conditions are not part of I25.8, but a patient can have both, so you may code both.
Written on I25 — Chronic ischemic heart disease
- non-ischemic myocardial injury (I5A)
Other codes that can never be billed with I25.8
These codes carry an Excludes1 note pointing at I25.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I25.8 alone.
- I25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
- I25.75Atherosclerosis of native coronary artery of transplanted heart with angina pectoris
- I25.76Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris
- I77.6Arteritis, unspecified
- T86.290Cardiac allograft vasculopathy
Risk adjustment
I25.8 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
I25.8 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead I25.8
6 child codes. Green means billable.
- I25.81Atherosclerosis of other coronary vessels without angina pectoris
- I25.82Chronic total occlusion of coronary artery
- I25.83Coronary atherosclerosis due to lipid rich plaque
- I25.84Coronary atherosclerosis due to calcified coronary lesion
- I25.85Chronic coronary microvascular dysfunction
- I25.89Other forms of chronic ischemic heart disease
Related codes at this level
Codes that share I25. If I25.8 is not quite right, the correct code is usually one of these.
- I25.1Atherosclerotic heart disease of native coronary artery
- I25.2Old myocardial infarction
- I25.3Aneurysm of heart
- I25.4Coronary artery aneurysm and dissection
- I25.5Ischemic cardiomyopathy
- I25.6Silent myocardial ischemia
- I25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
- I25.9Chronic ischemic heart disease, unspecified
Questions about I25.8
- Is I25.8 a billable ICD-10-CM code?
- No. I25.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does I25.8 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Ischemic heart diseases (I20-I25).