Chronic ischemic heart disease (I25)

Browse all the diagnosis codes used for chronic ischemic heart disease (i25). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Clinical Information

Myocardial Ischemia - A disorder of cardiac function caused by insufficient blood flow to the muscle tissue of the heart. The decreased blood flow may be due to narrowing of the coronary arteries (CORONARY ARTERY DISEASE), to obstruction by a thrombus (CORONARY THROMBOSIS), or less commonly, to diffuse narrowing of arterioles and other small vessels within the heart. Severe interruption of the blood supply to the myocardial tissue may result in necrosis of cardiac muscle (MYOCARDIAL INFARCTION).

Instructional Notations

Use Additional Code

The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

  • 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
  • tobacco use Z72.0

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • non-ischemic myocardial injury I5A
  • Diseases of the circulatory system (I00–I99)

    • Ischemic heart diseases (I20-I25)

        • Chronic ischemic heart disease (I25)

        • I25 Chronic ischemic heart disease
        • I25.1 Atherosclerotic heart disease of native coronary artery
        • I25.10 Atherosclerotic heart disease of native coronary artery without angina pectoris
        • I25.11 Atherosclerotic heart disease of native coronary artery with angina pectoris
        • I25.110 Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
        • I25.111 Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
        • I25.112 Atherosclerotic heart disease of native coronary artery with refractory angina pectoris UPDATED CODE
        • I25.118 Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
        • I25.119 Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
        • I25.2 Old myocardial infarction
        • I25.3 Aneurysm of heart
        • I25.4 Coronary artery aneurysm and dissection
        • I25.41 Coronary artery aneurysm
        • I25.42 Coronary artery dissection
        • I25.5 Ischemic cardiomyopathy
        • I25.6 Silent myocardial ischemia
        • I25.7 Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
        • I25.70 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris
        • I25.700 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
        • I25.701 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
        • I25.702 Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris
        • I25.708 Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris
        • I25.709 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris
        • I25.71 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris
        • I25.710 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
        • I25.711 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
        • I25.712 Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris
        • I25.718 Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris
        • I25.719 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris
        • I25.72 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris
        • I25.720 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris
        • I25.721 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm
        • I25.722 Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris
        • I25.728 Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris
        • I25.729 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris
        • I25.73 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris
        • I25.730 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
        • I25.731 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm
        • I25.732 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris
        • I25.738 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris
        • I25.739 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris
        • I25.75 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris
        • I25.750 Atherosclerosis of native coronary artery of transplanted heart with unstable angina
        • I25.751 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm
        • I25.752 Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris
        • I25.758 Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris
        • I25.759 Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris
        • I25.76 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris
        • I25.760 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina
        • I25.761 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm
        • I25.762 Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris
        • I25.768 Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris
        • I25.769 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris
        • I25.79 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris
        • I25.790 Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
        • I25.791 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
        • I25.792 Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
        • I25.798 Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
        • I25.799 Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
        • I25.8 Other forms of chronic ischemic heart disease
        • I25.81 Atherosclerosis of other coronary vessels without angina pectoris
        • I25.810 Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
        • I25.811 Atherosclerosis of native coronary artery of transplanted heart without angina pectoris
        • I25.812 Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris
        • I25.82 Chronic total occlusion of coronary artery
        • I25.83 Coronary atherosclerosis due to lipid rich plaque
        • I25.84 Coronary atherosclerosis due to calcified coronary lesion
        • I25.85 Chronic coronary microvascular dysfunction NEW CODE
        • I25.89 Other forms of chronic ischemic heart disease
        • I25.9 Chronic ischemic heart disease, unspecified