I25 Chronic ischemic heart disease

Category / Non-billable header 69 subcodes

Block: Ischemic heart diseases (I20-I25)

Excludes 2 (not included here)

  • 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)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
I25..1 Atherosclerotic heart disease of native coronary artery No
I25..10 Atherosclerotic heart disease of native coronary artery without angina pectoris Yes
I25..11 Atherosclerotic heart disease of native coronary artery with angina pectoris No
I25..110 Atherosclerotic heart disease of native coronary artery with unstable angina pectoris Yes
I25..111 Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm Yes
I25..112 Atherosclerotic heart disease of native coronary artery with refractory angina pectoris Yes
I25..118 Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris Yes
I25..119 Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris Yes
I25..2 Old myocardial infarction Yes
I25..3 Aneurysm of heart Yes
I25..4 Coronary artery aneurysm and dissection No
I25..41 Coronary artery aneurysm Yes
I25..42 Coronary artery dissection Yes
I25..5 Ischemic cardiomyopathy Yes
I25..6 Silent myocardial ischemia Yes
I25..7 Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris No
I25..70 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris No
I25..700 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris Yes
I25..701 Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm Yes
I25..702 Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris Yes
I25..708 Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris Yes
I25..709 Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris Yes
I25..71 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris No
I25..710 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris Yes
I25..711 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm Yes
I25..712 Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris Yes
I25..718 Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris Yes
I25..719 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris Yes
I25..72 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris No
I25..720 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris Yes
I25..721 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm Yes
I25..722 Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris Yes
I25..728 Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris Yes
I25..729 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris Yes
I25..73 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris No
I25..730 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris Yes
I25..731 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm Yes
I25..732 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris Yes
I25..738 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris Yes
I25..739 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris Yes
I25..75 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris No
I25..750 Atherosclerosis of native coronary artery of transplanted heart with unstable angina Yes
I25..751 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm Yes
I25..752 Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris Yes
I25..758 Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris Yes
I25..759 Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris Yes
I25..76 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris No
I25..760 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina Yes
I25..761 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm Yes
I25..762 Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris Yes
I25..768 Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris Yes
I25..769 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris Yes
I25..79 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris No
I25..790 Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris Yes
I25..791 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm Yes
I25..792 Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris Yes
I25..798 Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris Yes
I25..799 Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris Yes
I25..8 Other forms of chronic ischemic heart disease No
I25..81 Atherosclerosis of other coronary vessels without angina pectoris No
I25..810 Atherosclerosis of coronary artery bypass graft(s) without angina pectoris Yes
I25..811 Atherosclerosis of native coronary artery of transplanted heart without angina pectoris Yes
I25..812 Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris Yes
I25..82 Chronic total occlusion of coronary artery Yes
I25..83 Coronary atherosclerosis due to lipid rich plaque Yes
I25..84 Coronary atherosclerosis due to calcified coronary lesion Yes
I25..85 Chronic coronary microvascular dysfunction Yes
I25..89 Other forms of chronic ischemic heart disease Yes
I25..9 Chronic ischemic heart disease, unspecified Yes

Last reviewed: September 2026