About Section I20-I25

Section I20-I25 covers Ischemic heart diseases within Chapter 9 of the ICD-10-CM Tabular List. This section includes diagnosis codes ranging from I20 to I25. Each code below includes its description, billable status, and links to detailed coding guidelines.
Diagnosis Codes 119 entries
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›