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I51

Complications and ill-defined descriptions of heart disease

• any condition in I51.4-I51.9 due to hypertension (I11.-)
• any condition in I51.4-I51.9 due to hypertension and chronic kidney disease (I13.-)
• heart disease specified as rheumatic (I00-I09)

I51.0

Cardiac septal defect, acquired

• cardiac septal defect as current complication following acute myocardial infarction (I23.1, I23.2)

• Acquired septal atrial defect (old)
• Acquired septal auricular defect (old)
• Acquired septal ventricular defect (old)

I51.1

Rupture of chordae tendineae, not elsewhere classified

• rupture of chordae tendineae as current complication following acute myocardial infarction (I23.4)

I51.2

Rupture of papillary muscle, not elsewhere classified

• rupture of papillary muscle as current complication following acute myocardial infarction (I23.5)

I51.3

Intracardiac thrombosis, not elsewhere classified

• intracardiac thrombosis as current complication following acute myocardial infarction (I23.6)

• Apical thrombosis (old)
• Atrial thrombosis (old)
• Auricular thrombosis (old)
• Mural thrombosis (old)
• Ventricular thrombosis (old)

I51.4

Myocarditis, unspecified

• acute or subacute myocarditis (I40.-)

• Chronic (interstitial) myocarditis
• Myocardial fibrosis
• Myocarditis NOS

I51.5

Myocardial degeneration

• Fatty degeneration of heart or myocardium
• Myocardial disease
• Senile degeneration of heart or myocardium

I51.7

Cardiomegaly

• Cardiac dilatation
• Cardiac hypertrophy
• Ventricular dilatation

I51.8

Other ill-defined heart diseases

I51.81

Takotsubo syndrome

• Reversible left ventricular dysfunction following sudden emotional stress
• Stress induced cardiomyopathy
• Takotsubo cardiomyopathy
• Transient left ventricular apical ballooning syndrome

I51.89

Other ill-defined heart diseases

• Carditis (acute)(chronic)
• Pancarditis (acute)(chronic)

I51.9

Heart disease, unspecified