I20-I25
Ischemic heart diseases
Block coding notes
Excludes 1 never together · Excludes 2 may co-exist
Code also
the presence of hypertension (I10-I1A)
Codes in this block
119 codes
Billableusable codeNon-billableheader / grouping codeRisk-adjusting
- I20Angina pectorisNon-billable
- I20.0Unstable anginaBillable
- I20.1Angina pectoris with documented spasmBillable
- I20.2Refractory angina pectorisBillable
- I20.8Other forms of angina pectorisNon-billable
- I20.81Angina pectoris with coronary microvascular dysfunctionBillable
- I20.89Other forms of angina pectorisBillable
- I20.9Angina pectoris, unspecifiedBillable
- I21Acute myocardial infarctionNon-billable
- I21.0ST elevation (STEMI) myocardial infarction of anterior wallNon-billable
- I21.01ST elevation (STEMI) myocardial infarction involving left main coronary arteryBillable
- I21.02ST elevation (STEMI) myocardial infarction involving left anterior descending coronary arteryBillable
- I21.09ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wallBillable
- I21.1ST elevation (STEMI) myocardial infarction of inferior wallNon-billable
- I21.11ST elevation (STEMI) myocardial infarction involving right coronary arteryBillable
- I21.19ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wallBillable
- I21.2ST elevation (STEMI) myocardial infarction of other sitesNon-billable
- I21.21ST elevation (STEMI) myocardial infarction involving left circumflex coronary arteryBillable
- I21.29ST elevation (STEMI) myocardial infarction involving other sitesBillable
- I21.3ST elevation (STEMI) myocardial infarction of unspecified siteBillable
- I21.4Non-ST elevation (NSTEMI) myocardial infarctionBillable
- I21.9Acute myocardial infarction, unspecifiedBillable
- I21.AOther type of myocardial infarctionNon-billable
- I21.A1Myocardial infarction type 2Billable
- I21.A9Other myocardial infarction typeBillable
- I21.BMyocardial infarction with coronary microvascular dysfunctionBillable
- I22Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarctionNon-billable
- I22.0Subsequent ST elevation (STEMI) myocardial infarction of anterior wallBillable
- I22.1Subsequent ST elevation (STEMI) myocardial infarction of inferior wallBillable
- I22.2Subsequent non-ST elevation (NSTEMI) myocardial infarctionBillable
- I22.8Subsequent ST elevation (STEMI) myocardial infarction of other sitesBillable
- I22.9Subsequent ST elevation (STEMI) myocardial infarction of unspecified siteBillable
- I23Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)Non-billable
- I23.0Hemopericardium as current complication following acute myocardial infarctionBillable
- I23.1Atrial septal defect as current complication following acute myocardial infarctionBillable
- I23.2Ventricular septal defect as current complication following acute myocardial infarctionBillable
- I23.3Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarctionBillable
- I23.4Rupture of chordae tendineae as current complication following acute myocardial infarctionBillable
- I23.5Rupture of papillary muscle as current complication following acute myocardial infarctionBillable
- I23.6Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarctionBillable
- I23.7Postinfarction anginaBillable
- I23.8Other current complications following acute myocardial infarctionBillable
- I24Other acute ischemic heart diseasesNon-billable
- I24.0Acute coronary thrombosis not resulting in myocardial infarctionBillable
- I24.1Dressler's syndromeBillable
- I24.8Other forms of acute ischemic heart diseaseNon-billable
- I24.81Acute coronary microvascular dysfunctionBillable
- I24.89Other forms of acute ischemic heart diseaseBillable
- I24.9Acute ischemic heart disease, unspecifiedBillable
- I25Chronic ischemic heart diseaseNon-billable
- I25.1Atherosclerotic heart disease of native coronary arteryNon-billable
- I25.10Atherosclerotic heart disease of native coronary artery without angina pectorisBillable
- I25.11Atherosclerotic heart disease of native coronary artery with angina pectorisNon-billable
- I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectorisBillable
- I25.111Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasmBillable
- I25.112Atherosclerotic heart disease of native coronary artery with refractory angina pectorisBillable
- I25.118Atherosclerotic heart disease of native coronary artery with other forms of angina pectorisBillable
- I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectorisBillable
- I25.2Old myocardial infarctionBillable
- I25.3Aneurysm of heartBillable
- I25.4Coronary artery aneurysm and dissectionNon-billable
- I25.41Coronary artery aneurysmBillable
- I25.42Coronary artery dissectionBillable
- I25.5Ischemic cardiomyopathyBillable
- I25.6Silent myocardial ischemiaBillable
- I25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectorisNon-billable
- I25.70Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectorisNon-billable
- I25.700Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectorisBillable
- I25.701Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasmBillable
- I25.702Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectorisBillable
- I25.708Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectorisBillable
- I25.709Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectorisBillable
- I25.71Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectorisNon-billable
- I25.710Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectorisBillable
- I25.711Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasmBillable
- I25.712Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectorisBillable
- I25.718Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectorisBillable
- I25.719Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectorisBillable
- I25.72Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectorisNon-billable
- I25.720Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectorisBillable
- I25.721Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasmBillable
- I25.722Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectorisBillable
- I25.728Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectorisBillable
- I25.729Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectorisBillable
- I25.73Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectorisNon-billable
- I25.730Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectorisBillable
- I25.731Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasmBillable
- I25.732Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectorisBillable
- I25.738Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectorisBillable
- I25.739Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectorisBillable
- I25.75Atherosclerosis of native coronary artery of transplanted heart with angina pectorisNon-billable
- I25.750Atherosclerosis of native coronary artery of transplanted heart with unstable anginaBillable
- I25.751Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasmBillable
- I25.752Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectorisBillable
- I25.758Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectorisBillable
- I25.759Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectorisBillable
- I25.76Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectorisNon-billable
- I25.760Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable anginaBillable
- I25.761Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasmBillable
- I25.762Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectorisBillable
- I25.768Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectorisBillable
- I25.769Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectorisBillable
- I25.79Atherosclerosis of other coronary artery bypass graft(s) with angina pectorisNon-billable
- I25.790Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectorisBillable
- I25.791Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasmBillable
- I25.792Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectorisBillable
- I25.798Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectorisBillable
- I25.799Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectorisBillable
- I25.8Other forms of chronic ischemic heart diseaseNon-billable
- I25.81Atherosclerosis of other coronary vessels without angina pectorisNon-billable
- I25.810Atherosclerosis of coronary artery bypass graft(s) without angina pectorisBillable
- I25.811Atherosclerosis of native coronary artery of transplanted heart without angina pectorisBillable
- I25.812Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectorisBillable
- I25.82Chronic total occlusion of coronary arteryBillable
- I25.83Coronary atherosclerosis due to lipid rich plaqueBillable
- I25.84Coronary atherosclerosis due to calcified coronary lesionBillable
- I25.85Chronic coronary microvascular dysfunctionBillable
- I25.89Other forms of chronic ischemic heart diseaseBillable
- I25.9Chronic ischemic heart disease, unspecifiedBillable
Official Guidelines for I20-I25
FY 2026 ›Sections that reference codes in I20-I25
- I.C.9.bAtherosclerotic Coronary Artery Disease and AnginaI25.11
- I.C.9.e.1)Type 1 ST elevation myocardial infarction (STEMI) and non-I21.0-I21.2
- I.C.9.e.2)Acute myocardial infarction, unspecifiedI21.9
- I.C.9.e.4)Subsequent acute myocardial infarctionI22
- I.C.9.e.5)Other Types of Myocardial InfarctionI21.0- I21.4
- I.C.9.e.6)Myocardial Infarction with Coronary Microvascular DysfunctionI21.B