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ICD-10-CM category I25: Chronic ischemic heart disease

Category I25 is a heading in chapter 9 (Diseases of the circulatory system (I00-I99)), section Ischemic heart diseases (I20-I25). It is not billable; report one of the 56 complete codes below.

Notes that apply to every I25 code

Excludes2 (not part of this condition, may be coded together)
  • non-ischemic myocardial injury (I5A)
Use 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)

Billable codes in I25

Billable FY2027 ICD-10-CM codes in category I25
CodeDescription
I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
I25.111Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
I25.112Atherosclerotic heart disease of native coronary artery with refractory angina pectoris
I25.118Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
I25.2Old myocardial infarction
I25.3Aneurysm of heart
I25.41Coronary artery aneurysm
I25.42Coronary artery dissection
I25.5Ischemic cardiomyopathy
I25.6Silent myocardial ischemia
I25.700Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
I25.701Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
I25.702Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris
I25.708Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris
I25.709Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris
I25.710Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
I25.711Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.712Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris
I25.718Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris
I25.719Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris
I25.720Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris
I25.721Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.722Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris
I25.728Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris
I25.729Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris
I25.730Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
I25.731Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.732Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris
I25.738Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris
I25.739Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris
I25.750Atherosclerosis of native coronary artery of transplanted heart with unstable angina
I25.751Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm
I25.752Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris
I25.758Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris
I25.759Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris
I25.760Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina
I25.761Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm
I25.762Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris
I25.768Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris
I25.769Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris
I25.790Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
I25.791Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.792Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
I25.798Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
I25.799Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
I25.810Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
I25.811Atherosclerosis of native coronary artery of transplanted heart without angina pectoris
I25.812Atherosclerosis of bypass graft of coronary artery of transplanted heart 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
I25.9Chronic ischemic heart disease, unspecified

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Codes from the FY2027 ICD-10-CM files (all chapters). Report the code that matches the documentation and the Official Guidelines; this list is not coding advice.