ICD-10-CM I25: Chronic ischemic heart disease

ICD-10-CM Diagnosis Code (2025)

Official Description for I25

Chronic ischemic heart disease

Coding Notes & Guidelines for I25

Excludes1: Not Coded Here

unstable angina without atherosclerotic heart disease (I20.0)

Excludes1: Not Coded Here

angina pectoris with documented spasm without atherosclerotic heart disease (I20.1)

Excludes1: Not Coded Here

other forms of angina pectoris without atherosclerotic heart disease (I20.8-)

Excludes1: Not Coded Here

unspecified angina pectoris without atherosclerotic heart disease (I20.9)

Excludes1: Not Coded Here

congenital coronary (artery) aneurysm (Q24.5)

Excludes1: Not Coded Here
  • atherosclerosis of bypass graft(s) of transplanted heart without angina pectoris (I25.812)
  • atherosclerosis of coronary artery bypass graft(s) without angina pectoris (I25.810)
  • atherosclerosis of native coronary artery of transplanted heart without angina pectoris (I25.811)
Excludes1: Not Coded Here

unstable angina pectoris without atherosclerosis of coronary artery bypass graft (I20.0)

Excludes1: Not Coded Here

angina pectoris with documented spasm without atherosclerosis of coronary artery bypass graft (I20.1)

Excludes1: Not Coded Here

other forms of angina pectoris without atherosclerosis of coronary artery bypass graft (I20.8-)

Excludes1: Not Coded Here

unspecified angina pectoris without atherosclerosis of coronary artery bypass graft (I20.9)

Excludes1: Not Coded Here

unstable angina without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.0)

Excludes1: Not Coded Here

angina pectoris with documented spasm without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.1)

Excludes1: Not Coded Here

other forms of angina pectoris without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.8-)

Excludes1: Not Coded Here

unspecified angina pectoris without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.9)

Excludes1: Not Coded Here

unstable angina without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.0)

Excludes1: Not Coded Here

angina pectoris with documented spasm without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.1)

Excludes1: Not Coded Here

other forms of angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.8-)

Excludes1: Not Coded Here

unspecified angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.9)

Excludes1: Not Coded Here

unstable angina without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.0)

Excludes1: Not Coded Here

angina pectoris with documented spasm without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.1)

Excludes1: Not Coded Here

other forms of angina pectoris without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.8-)

Excludes1: Not Coded Here

unspecified angina pectoris without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.9)

Excludes1: Not Coded Here

atherosclerosis of native coronary artery of transplanted heart without angina pectoris (I25.811)

Excludes1: Not Coded Here

atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris (I25.812)

Excludes1: Not Coded Here

unstable angina without atherosclerosis of other coronary artery bypass graft(s) (I20.0)

Excludes1: Not Coded Here

angina pectoris with documented spasm without atherosclerosis of other coronary artery bypass graft(s) (I20.1)

Excludes1: Not Coded Here

other forms of angina pectoris without atherosclerosis of other coronary artery bypass graft(s) (I20.8-)

Excludes1: Not Coded Here

unspecified angina pectoris without atherosclerosis of other coronary artery bypass graft(s) (I20.9)

Excludes1: Not Coded Here

atherosclerosis of coronary bypass graft(s) with angina pectoris (I25.70-I25.73-, I25.79-)

Excludes1: Not Coded Here

atherosclerosis of native coronary artery of transplanted heart with angina pectoris (I25.75-)

Excludes1: Not Coded Here

atherosclerosis of bypass graft of transplanted heart with angina pectoris (I25.76)

Excludes1: Not Coded Here
  • acute coronary occlusion with myocardial infarction (I21.0-I21.B, I22.-)
  • acute coronary occlusion without myocardial infarction (I24.0)
Excludes2: Not Included Here

non-ischemic myocardial injury (I5A)

Excludes2: Not Included Here
  • atheroembolism (I75.-)
  • atherosclerosis of coronary artery bypass graft(s) and transplanted heart (I25.7-)
Excludes2: Not Included Here

coronary atherosclerosis (I25.1-, I25.7-)

Excludes2: Not Included Here

embolism or thrombus of coronary artery bypass graft(s) (T82.8-)

Excludes2: Not Included Here

atherosclerotic heart disease of native coronary artery without angina pectoris (I25.10)

Code First

coronary atherosclerosis (I25.1-, I25.7-, I25.81-)

Code First

coronary atherosclerosis (I25.1-, I25.7-, I25.81-)

Code First

coronary atherosclerosis (I25.1-, I25.7-, I25.81-)

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)
Use Additional Code
  • code, if applicable, to identify:
  • coronary atherosclerosis due to calcified coronary lesion (I25.84)
  • coronary atherosclerosis due to lipid rich plaque (I25.83)
Use Additional Code
  • code, if applicable, to identify:
  • coronary atherosclerosis due to calcified coronary lesion (I25.84)
  • coronary atherosclerosis due to lipid rich plaque (I25.83)
Use Additional Code
  • code, if applicable, to identify:
  • coronary atherosclerosis due to calcified coronary lesion (I25.84)
  • coronary atherosclerosis due to lipid rich plaque (I25.83)
Inclusion Terms
  • Atherosclerotic cardiovascular disease
  • Coronary (artery) atheroma
  • Coronary (artery) atherosclerosis
  • Coronary (artery) disease
  • Coronary (artery) sclerosis
Inclusion Terms

Atherosclerotic heart disease NOS

Inclusion Terms
  • Atherosclerotic heart disease with angina NOS
  • Atherosclerotic heart disease with ischemic chest pain
Inclusion Terms
  • Healed myocardial infarction
  • Past myocardial infarction diagnosed by ECG or other investigation, but currently presenting no symptoms
Inclusion Terms
  • Mural aneurysm
  • Ventricular aneurysm
Inclusion Terms

Coronary arteriovenous fistula, acquired

Inclusion Terms

Atherosclerosis of internal mammary artery graft with angina pectoris

Inclusion Terms

Atherosclerosis of coronary artery bypass graft NOS

Inclusion Terms

Atherosclerosis of native coronary artery of transplanted heart NOS

Inclusion Terms

Atherosclerosis of bypass graft of transplanted heart NOS

Inclusion Terms
  • Complete occlusion of coronary artery
  • Total occlusion of coronary artery
Inclusion Terms

Coronary atherosclerosis due to severely calcified coronary lesion

Inclusion Terms
  • Chronic (presentation of) coronary microvascular disease
  • Coronary microvascular dysfunction NOS
Inclusion Terms

Ischemic heart disease (chronic) NOS

Child Codes (More Specific Codes for I25):

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 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 I25.89 - Other forms of chronic ischemic heart disease I25.9 - Chronic ischemic heart disease, unspecified

About ICD-10-CM Code I25 (Chronic ischemic heart disease)

ICD-10-CM code I25 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM I25 became effective on October 1, 2024.

This page provides detailed information about I25 - Chronic ischemic heart disease. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Chronic ischemic heart disease.