Ischemic heart diseases (I20-I25)
I20Angina pectoris
Use Additional Code: code to identify:
› 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)
Excludes 1: angina pectoris with atherosclerotic heart disease of native coronary arteries (I25.1-)
› atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris (I25.7-)
› postinfarction angina (I23.7)
I20.0Unstable angina
› Accelerated angina
› Crescendo angina
› De novo effort angina
› Intermediate coronary syndrome
› Preinfarction syndrome
› Worsening effort angina
I20.1Angina pectoris with documented spasm
› Angiospastic angina
› Prinzmetal angina
› Spasm-induced angina
› Variant angina
I20.2Refractory angina pectoris
I20.8Other forms of angina pectoris
Use Additional Code: code(s) for symptoms associated with angina equivalent
I20.81Angina pectoris with coronary microvascular dysfunction
› Angina pectoris with coronary microvascular disease
I20.89Other forms of angina pectoris
› Angina equivalent
› Angina of effort
› Coronary slow flow syndrome
› Stable angina
› Stenocardia
I20.9Angina pectoris, unspecified
› Angina NOS
› Anginal syndrome
› Cardiac angina
› Ischemic chest pain
I21Acute myocardial infarction
Includes: cardiac infarction
› coronary (artery) embolism
› coronary (artery) occlusion
› coronary (artery) rupture
› coronary (artery) thrombosis
› infarction of heart, myocardium, or ventricle
› myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset
Use Additional Code: code, if applicable, to identify:
› exposure to environmental tobacco smoke (Z77.22)
› history of tobacco dependence (Z87.891)
› occupational exposure to environmental tobacco smoke (Z57.31)
› status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
› tobacco dependence (F17.-)
› tobacco use (Z72.0)
Excludes 2: old myocardial infarction (I25.2)
› postmyocardial infarction syndrome (I24.1)
› subsequent type 1 myocardial infarction (I22.-)
I21.0ST elevation (STEMI) myocardial infarction of anterior wall
› Type 1 ST elevation myocardial infarction of anterior wall
I21.01ST elevation (STEMI) myocardial infarction involving left main coronary artery
I21.02ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
› ST elevation (STEMI) myocardial infarction involving diagonal coronary artery
I21.09ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
› Acute transmural myocardial infarction of anterior wall
› Anteroapical transmural (Q wave) infarction (acute)
› Anterolateral transmural (Q wave) infarction (acute)
› Anteroseptal transmural (Q wave) infarction (acute)
› Transmural (Q wave) infarction (acute) (of) anterior (wall) NOS
I21.1ST elevation (STEMI) myocardial infarction of inferior wall
› Type 1 ST elevation myocardial infarction of inferior wall
I21.11ST elevation (STEMI) myocardial infarction involving right coronary artery
› Inferoposterior transmural (Q wave) infarction (acute)
I21.19ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
› Acute transmural myocardial infarction of inferior wall
› Inferolateral transmural (Q wave) infarction (acute)
› Transmural (Q wave) infarction (acute) (of) diaphragmatic wall
› Transmural (Q wave) infarction (acute) (of) inferior (wall) NOS
Excludes 2: ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery (I21.21)
I21.2ST elevation (STEMI) myocardial infarction of other sites
› Type 1 ST elevation myocardial infarction of other sites
I21.21ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery
› ST elevation (STEMI) myocardial infarction involving oblique marginal coronary artery
I21.29ST elevation (STEMI) myocardial infarction involving other sites
› Acute transmural myocardial infarction of other sites
› Apical-lateral transmural (Q wave) infarction (acute)
› Basal-lateral transmural (Q wave) infarction (acute)
› High lateral transmural (Q wave) infarction (acute)
› Lateral (wall) NOS transmural (Q wave) infarction (acute)
› Posterior (true) transmural (Q wave) infarction (acute)
› Posterobasal transmural (Q wave) infarction (acute)
› Posterolateral transmural (Q wave) infarction (acute)
› Posteroseptal transmural (Q wave) infarction (acute)
› Septal transmural (Q wave) infarction (acute) NOS
I21.3ST elevation (STEMI) myocardial infarction of unspecified site
› Acute transmural myocardial infarction of unspecified site
› Transmural (Q wave) myocardial infarction NOS
› Type 1 ST elevation myocardial infarction of unspecified site
I21.4Non-ST elevation (NSTEMI) myocardial infarction
› Acute subendocardial myocardial infarction
› Non-Q wave myocardial infarction NOS
› Nontransmural myocardial infarction NOS
› Type 1 non-ST elevation myocardial infarction
I21.9Acute myocardial infarction, unspecified
› Myocardial infarction (acute) NOS
I21.AOther type of myocardial infarction
I21.A1Myocardial infarction type 2
› Myocardial infarction due to demand ischemia
› Myocardial infarction secondary to ischemic imbalance
Code First: the underlying cause, such as:
› anemia (D50.0-D64.9)
› chronic obstructive pulmonary disease (J44.-)
› paroxysmal tachycardia (I47.0-I47.9)
› shock (R57.0-R57.9)
I21.A9Other myocardial infarction type
› Myocardial infarction associated with revascularization procedure
› Myocardial infarction type 3
› Myocardial infarction type 4a
› Myocardial infarction type 4b
› Myocardial infarction type 4c
› Myocardial infarction type 5
Code First: , if applicable, postprocedural myocardial infarction following cardiac surgery (I97.190), or postprocedural myocardial infarction during cardiac surgery (I97.790)
Code Also: complication, if known and applicable, such as:
› (acute) stent occlusion (T82.897-)
› (acute) stent stenosis (T82.855-)
› (acute) stent thrombosis (T82.867-)
› cardiac arrest due to underlying cardiac condition (I46.2)
› complication of percutaneous coronary intervention (PCI) (I97.89)
› occlusion of coronary artery bypass graft (T82.218-)
I21.BMyocardial infarction with coronary microvascular dysfunction
› Myocardial infarction with coronary microvascular disease
› Myocardial infarction with nonobstructive coronary arteries [MINOCA] with microvascular disease
I22Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
Includes: acute myocardial infarction occurring within four weeks (28 days) of a previous acute myocardial infarction, regardless of site
› cardiac infarction
› coronary (artery) embolism
› coronary (artery) occlusion
› coronary (artery) rupture
› coronary (artery) thrombosis
› infarction of heart, myocardium, or ventricle
› recurrent myocardial infarction
› reinfarction of myocardium
› rupture of heart, myocardium, or ventricle
› subsequent type 1 myocardial infarction
Use Additional Code: code, if applicable, to identify:
› exposure to environmental tobacco smoke (Z77.22)
› history of tobacco dependence (Z87.891)
› occupational exposure to environmental tobacco smoke (Z57.31)
› status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
› tobacco dependence (F17.-)
› tobacco use (Z72.0)
Excludes 1: subsequent myocardial infarction, type 2 (I21.A1)
› subsequent myocardial infarction of other type (type 3) (type 4) (type 5) (I21.A9)
I22.0Subsequent ST elevation (STEMI) myocardial infarction of anterior wall
› Subsequent acute transmural myocardial infarction of anterior wall
› Subsequent transmural (Q wave) infarction (acute)(of) anterior (wall) NOS
› Subsequent anteroapical transmural (Q wave) infarction (acute)
› Subsequent anterolateral transmural (Q wave) infarction (acute)
› Subsequent anteroseptal transmural (Q wave) infarction (acute)
I22.1Subsequent ST elevation (STEMI) myocardial infarction of inferior wall
› Subsequent acute transmural myocardial infarction of inferior wall
› Subsequent transmural (Q wave) infarction (acute)(of) diaphragmatic wall
› Subsequent transmural (Q wave) infarction (acute)(of) inferior (wall) NOS
› Subsequent inferolateral transmural (Q wave) infarction (acute)
› Subsequent inferoposterior transmural (Q wave) infarction (acute)
I22.2Subsequent non-ST elevation (NSTEMI) myocardial infarction
› Subsequent acute subendocardial myocardial infarction
› Subsequent non-Q wave myocardial infarction NOS
› Subsequent nontransmural myocardial infarction NOS
I22.8Subsequent ST elevation (STEMI) myocardial infarction of other sites
› Subsequent acute transmural myocardial infarction of other sites
› Subsequent apical-lateral transmural (Q wave) myocardial infarction (acute)
› Subsequent basal-lateral transmural (Q wave) myocardial infarction (acute)
› Subsequent high lateral transmural (Q wave) myocardial infarction (acute)
› Subsequent transmural (Q wave) myocardial infarction (acute)(of) lateral (wall) NOS
› Subsequent posterior (true) transmural (Q wave) myocardial infarction (acute)
› Subsequent posterobasal transmural (Q wave) myocardial infarction (acute)
› Subsequent posterolateral transmural (Q wave) myocardial infarction (acute)
› Subsequent posteroseptal transmural (Q wave) myocardial infarction (acute)
› Subsequent septal NOS transmural (Q wave) myocardial infarction (acute)
I22.9Subsequent ST elevation (STEMI) myocardial infarction of unspecified site
› Subsequent acute myocardial infarction of unspecified site
› Subsequent myocardial infarction (acute) NOS
I23Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)
I23.0Hemopericardium as current complication following acute myocardial infarction
Excludes 1: hemopericardium not specified as current complication following acute myocardial infarction (I31.2)
I23.1Atrial septal defect as current complication following acute myocardial infarction
Excludes 1: acquired atrial septal defect not specified as current complication following acute myocardial infarction (I51.0)
I23.2Ventricular septal defect as current complication following acute myocardial infarction
Excludes 1: acquired ventricular septal defect not specified as current complication following acute myocardial infarction (I51.0)
I23.3Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarction
I23.4Rupture of chordae tendineae as current complication following acute myocardial infarction
Excludes 1: rupture of chordae tendineae not specified as current complication following acute myocardial infarction (I51.1)
I23.5Rupture of papillary muscle as current complication following acute myocardial infarction
Excludes 1: rupture of papillary muscle not specified as current complication following acute myocardial infarction (I51.2)
I23.6Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction
Excludes 1: thrombosis of atrium, auricular appendage, and ventricle not specified as current complication following acute myocardial infarction (I51.3)
I23.7Postinfarction angina
I23.8Other current complications following acute myocardial infarction
I24Other acute ischemic heart diseases
Excludes 1: angina pectoris (I20.-)
› transient myocardial ischemia in newborn (P29.4)
Excludes 2: non-ischemic myocardial injury (I5A)
I24.0Acute coronary thrombosis not resulting in myocardial infarction
› Acute coronary (artery) (vein) embolism not resulting in myocardial infarction
› Acute coronary (artery) (vein) occlusion not resulting in myocardial infarction
› Acute coronary (artery) (vein) thromboembolism not resulting in myocardial infarction
Excludes 1: atherosclerotic heart disease (I25.1-)
I24.1Dressler's syndrome
› Postmyocardial infarction syndrome
Excludes 1: postinfarction angina (I23.7)
I24.8Other forms of acute ischemic heart disease
Excludes 1: myocardial infarction due to demand ischemia (I21.A1)
I24.81Acute coronary microvascular dysfunction
› Acute (presentation of) coronary microvascular disease
I24.89Other forms of acute ischemic heart disease
I24.9Acute ischemic heart disease, unspecified
Excludes 1: ischemic heart disease (chronic) NOS (I25.9)
I25Chronic ischemic heart disease
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)
Excludes 2: non-ischemic myocardial injury (I5A)
I25.1Atherosclerotic heart disease of native coronary artery
› Atherosclerotic cardiovascular disease
› Coronary (artery) atheroma
› Coronary (artery) atherosclerosis
› Coronary (artery) disease
› Coronary (artery) sclerosis
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)
Excludes 2: atheroembolism (I75.-)
› atherosclerosis of coronary artery bypass graft(s) and transplanted heart (I25.7-)
I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
› Atherosclerotic heart disease NOS
I25.11Atherosclerotic heart disease of native coronary artery with angina pectoris
I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
Excludes 1: unstable angina without atherosclerotic heart disease (I20.0)
I25.111Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
Excludes 1: angina pectoris with documented spasm without atherosclerotic heart disease (I20.1)
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
Excludes 1: other forms of angina pectoris without atherosclerotic heart disease (I20.8-)
I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
› Atherosclerotic heart disease with angina NOS
› Atherosclerotic heart disease with ischemic chest pain
Excludes 1: unspecified angina pectoris without atherosclerotic heart disease (I20.9)
I25.2Old myocardial infarction
› Healed myocardial infarction
› Past myocardial infarction diagnosed by ECG or other investigation, but currently presenting no symptoms
I25.3Aneurysm of heart
› Mural aneurysm
› Ventricular aneurysm
I25.4Coronary artery aneurysm and dissection
I25.41Coronary artery aneurysm
› Coronary arteriovenous fistula, acquired
Excludes 1: congenital coronary (artery) aneurysm (Q24.5)
I25.42Coronary artery dissection
I25.5Ischemic cardiomyopathy
Excludes 2: coronary atherosclerosis (I25.1-, I25.7-)
I25.6Silent myocardial ischemia
I25.7Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris
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)
Excludes 1: 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)
I25.70Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris
I25.700Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
Excludes 1: unstable angina pectoris without atherosclerosis of coronary artery bypass graft (I20.0)
I25.701Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
Excludes 1: angina pectoris with documented spasm without atherosclerosis of coronary artery bypass graft (I20.1)
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
Excludes 1: other forms of angina pectoris without atherosclerosis of coronary artery bypass graft (I20.8-)
I25.709Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris
Excludes 1: unspecified angina pectoris without atherosclerosis of coronary artery bypass graft (I20.9)
I25.71Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris
I25.710Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
Excludes 1: unstable angina without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.0)
Excludes 2: embolism or thrombus of coronary artery bypass graft(s) (T82.8-)
I25.711Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
Excludes 1: angina pectoris with documented spasm without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.1)
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
Excludes 1: other forms of angina pectoris without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.8-)
I25.719Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris
Excludes 1: unspecified angina pectoris without atherosclerosis of autologous vein coronary artery bypass graft(s) (I20.9)
I25.72Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris
› Atherosclerosis of internal mammary artery graft with angina pectoris
I25.720Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris
Excludes 1: unstable angina without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.0)
I25.721Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm
Excludes 1: angina pectoris with documented spasm without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.1)
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
Excludes 1: other forms of angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.8-)
I25.729Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris
Excludes 1: unspecified angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.9)
I25.73Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris
I25.730Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
Excludes 1: unstable angina without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.0)
I25.731Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm
Excludes 1: angina pectoris with documented spasm without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.1)
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
Excludes 1: other forms of angina pectoris without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.8-)
I25.739Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris
Excludes 1: unspecified angina pectoris without atherosclerosis of nonautologous biological coronary artery bypass graft(s) (I20.9)
I25.75Atherosclerosis of native coronary artery of transplanted heart with angina pectoris
Excludes 1: atherosclerosis of native coronary artery of transplanted heart without angina pectoris (I25.811)
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
I25.76Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris
Excludes 1: atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris (I25.812)
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
I25.79Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris
I25.790Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
Excludes 1: unstable angina without atherosclerosis of other coronary artery bypass graft(s) (I20.0)
I25.791Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
Excludes 1: angina pectoris with documented spasm without atherosclerosis of other coronary artery bypass graft(s) (I20.1)
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
Excludes 1: other forms of angina pectoris without atherosclerosis of other coronary artery bypass graft(s) (I20.8-)
I25.799Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
Excludes 1: unspecified angina pectoris without atherosclerosis of other coronary artery bypass graft(s) (I20.9)
I25.8Other forms of chronic ischemic heart disease
I25.81Atherosclerosis of other coronary vessels without angina pectoris
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)
Excludes 2: atherosclerotic heart disease of native coronary artery without angina pectoris (I25.10)
I25.810Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
› Atherosclerosis of coronary artery bypass graft NOS
Excludes 1: atherosclerosis of coronary bypass graft(s) with angina pectoris (I25.70-I25.73-, I25.79-)
I25.811Atherosclerosis of native coronary artery of transplanted heart without angina pectoris
› Atherosclerosis of native coronary artery of transplanted heart NOS
Excludes 1: atherosclerosis of native coronary artery of transplanted heart with angina pectoris (I25.75-)
I25.812Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris
› Atherosclerosis of bypass graft of transplanted heart NOS
Excludes 1: atherosclerosis of bypass graft of transplanted heart with angina pectoris (I25.76)
I25.82Chronic total occlusion of coronary artery
› Complete occlusion of coronary artery
› Total occlusion of coronary artery
Code First: coronary atherosclerosis (I25.1-, I25.7-, I25.81-)
Excludes 1: acute coronary occlusion with myocardial infarction (I21.0-I21.B, I22.-)
› acute coronary occlusion without myocardial infarction (I24.0)
I25.83Coronary atherosclerosis due to lipid rich plaque
Code First: coronary atherosclerosis (I25.1-, I25.7-, I25.81-)
I25.84Coronary atherosclerosis due to calcified coronary lesion
› Coronary atherosclerosis due to severely calcified coronary lesion
Code First: coronary atherosclerosis (I25.1-, I25.7-, I25.81-)
I25.85Chronic coronary microvascular dysfunction
› Chronic (presentation of) coronary microvascular disease
› Coronary microvascular dysfunction NOS
I25.89Other forms of chronic ischemic heart disease
I25.9Chronic ischemic heart disease, unspecified
› Ischemic heart disease (chronic) NOS