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Diseases of the circulatory system (I00-I99)

Excludes 2:: certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
transient cerebral ischemic attacks and related syndromes (G45.-)

Ischemic heart diseases (I20-I25)

Code also: the presence of hypertension (I10-I1A)

I20

Angina pectoris [+]

Use additional	code to identify:
Use additional	exposure to environmental tobacco smoke (Z77.22)
Use additional	history of tobacco dependence (Z87.891)
Use additional	occupational exposure to environmental tobacco smoke (Z57.31)
Use additional	tobacco dependence (F17.-)
Use additional	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)

I21

Acute 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, if applicable, to identify:
Use additional	exposure to environmental tobacco smoke (Z77.22)
Use additional	history of tobacco dependence (Z87.891)
Use additional	occupational exposure to environmental tobacco smoke (Z57.31)
Use additional	status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
Use additional	tobacco dependence (F17.-)
Use additional	tobacco use (Z72.0)
Excludes 2:	old myocardial infarction (I25.2) postmyocardial infarction syndrome (I24.1) subsequent type 1 myocardial infarction (I22.-)

I21.0

ST elevation (STEMI) myocardial infarction of anterior wall [+]
Type 1 ST elevation myocardial infarction of anterior wall

I21.1

ST elevation (STEMI) myocardial infarction of inferior wall [+]
Type 1 ST elevation myocardial infarction of inferior wall

I21.2

ST elevation (STEMI) myocardial infarction of other sites [+]
Type 1 ST elevation myocardial infarction of other sites

I21.3

ST 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

I21.4

Non-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

I21.9

Acute myocardial infarction, unspecified
Myocardial infarction (acute) NOS

I21.A

Other type of myocardial infarction [+]

I21.B

Myocardial infarction with coronary microvascular dysfunction
Myocardial infarction with coronary microvascular disease
Myocardial infarction with nonobstructive coronary arteries [MINOCA] with microvascular disease

I22

Subsequent 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, if applicable, to identify:
Use additional	exposure to environmental tobacco smoke (Z77.22)
Use additional	history of tobacco dependence (Z87.891)
Use additional	occupational exposure to environmental tobacco smoke (Z57.31)
Use additional	status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
Use additional	tobacco dependence (F17.-)
Use additional	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)

I22.0

Subsequent 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)

I22.1

Subsequent 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)

I22.2

Subsequent non-ST elevation (NSTEMI) myocardial infarction
Subsequent acute subendocardial myocardial infarction
Subsequent non-Q wave myocardial infarction NOS
Subsequent nontransmural myocardial infarction NOS

I22.8

Subsequent 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)

I22.9

Subsequent ST elevation (STEMI) myocardial infarction of unspecified site
Subsequent acute myocardial infarction of unspecified site
Subsequent myocardial infarction (acute) NOS

I23

Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period) [+]

I23.0

Hemopericardium as current complication following acute myocardial infarction

Excludes 1:

hemopericardium not specified as current complication following acute myocardial infarction (I31.2)

I23.1

Atrial 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)

I23.2

Ventricular 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)

I23.3

Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarction

I23.4

Rupture 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)

I23.5

Rupture 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)

I23.6

Thrombosis 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)

I23.7

Postinfarction angina

I23.8

Other current complications following acute myocardial infarction

I24

Other acute ischemic heart diseases [+]

Excludes 1:	angina pectoris (I20.-) transient myocardial ischemia in newborn (P29.4)
Excludes 2:	non-ischemic myocardial injury (I5A)

I25

Chronic ischemic heart disease [+]

Use additional	code to identify:
Use additional	chronic total occlusion of coronary artery (I25.82)
Use additional	exposure to environmental tobacco smoke (Z77.22)
Use additional	history of tobacco dependence (Z87.891)
Use additional	occupational exposure to environmental tobacco smoke (Z57.31)
Use additional	tobacco dependence (F17.-)
Use additional	tobacco use (Z72.0)
Excludes 2:	non-ischemic myocardial injury (I5A)

I25.1

Atherosclerotic heart disease of native coronary artery [+]
Atherosclerotic cardiovascular disease
Coronary (artery) atheroma
Coronary (artery) atherosclerosis
Coronary (artery) disease
Coronary (artery) sclerosis

Use additional	code, if applicable, to identify:
Use additional	coronary atherosclerosis due to calcified coronary lesion (I25.84)
Use additional	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-)

I25.10

Atherosclerotic heart disease of native coronary artery without angina pectoris
Atherosclerotic heart disease NOS

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

Excludes 1:

unstable angina without atherosclerotic heart disease (I20.0)

I25.111

Atherosclerotic 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)

I25.112

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

Excludes 1:

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

I25.119

Atherosclerotic 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)

I25.2

Old myocardial infarction
Healed myocardial infarction
Past myocardial infarction diagnosed by ECG or other investigation, but currently presenting no symptoms

I25.3

Aneurysm of heart
Mural aneurysm
Ventricular aneurysm

I25.4

Coronary artery aneurysm and dissection [+]

I25.5

Ischemic cardiomyopathy

Excludes 2:

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

I25.6

Silent myocardial ischemia

I25.7

Atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris [+]

Use additional	code, if applicable, to identify:
Use additional	coronary atherosclerosis due to calcified coronary lesion (I25.84)
Use additional	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)

I25.70

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

Excludes 1:

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

I25.701

Atherosclerosis 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)

I25.702

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

Excludes 1:

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

I25.709

Atherosclerosis 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)

I25.71

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

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-)

I25.711

Atherosclerosis 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)

I25.712

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

Excludes 1:

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

I25.719

Atherosclerosis 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)

I25.72

Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris [+]
Atherosclerosis of internal mammary artery graft with angina pectoris

I25.720

Atherosclerosis 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)

I25.721

Atherosclerosis 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)

I25.722

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

Excludes 1:

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

I25.729

Atherosclerosis 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)

I25.73

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

Excludes 1:

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

I25.731

Atherosclerosis 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)

I25.732

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

Excludes 1:

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

I25.739

Atherosclerosis 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)

I25.75

Atherosclerosis 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)

I25.76

Atherosclerosis 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)

I25.79

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

Excludes 1:

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

I25.791

Atherosclerosis 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)

I25.792

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

Excludes 1:

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

I25.799

Atherosclerosis 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)

I25.8

Other forms of chronic ischemic heart disease [+]

I25.81

Atherosclerosis of other coronary vessels without angina pectoris [+]

Use additional	code, if applicable, to identify:
Use additional	coronary atherosclerosis due to calcified coronary lesion (I25.84)
Use additional	coronary atherosclerosis due to lipid rich plaque (I25.83)
Excludes 2:	atherosclerotic heart disease of native coronary artery without angina pectoris (I25.10)

I25.82

Chronic 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)

I25.83

Coronary atherosclerosis due to lipid rich plaque

Code first

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

I25.84

Coronary atherosclerosis due to calcified coronary lesion
Coronary atherosclerosis due to severely calcified coronary lesion

Code first

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

I25.85

Chronic coronary microvascular dysfunction
Chronic (presentation of) coronary microvascular disease
Coronary microvascular dysfunction NOS

I25.89

Other forms of chronic ischemic heart disease

I25.9

Chronic ischemic heart disease, unspecified
Ischemic heart disease (chronic) NOS