7. DISEASES OF THE CIRCULATORY SYSTEM (390-459)
OTHER FORMS OF HEART DISEASE (420-429)
420: Acute pericarditis
Includes:
acute:
mediastinopericarditis
myopericarditis
pericardial effusion
pleuropericarditis
pneumopericarditis
Excludes:
acute rheumatic pericarditis (391.0)
postmyocardial infarction syndrome [Dressler's] (411.0)
421: Acute and subacute endocarditis
422: Acute myocarditis
Excludes:
acute rheumatic myocarditis (391.2)
423: Other diseases of pericardium
Excludes:
that specified as rheumatic (393)
424: Other diseases of endocardium
Excludes:
bacterial endocarditis (421.0-421.9)
rheumatic endocarditis (391.1, 394.0-397.9)
syphilitic endocarditis (093.20-093.24)
425: Cardiomyopathy
Includes:
myocardiopathy
426: Conduction disorders
427: Cardiac dysrhythmias
Excludes:
that complicating:
abortion (634-638 with.7, 639.8)
ectopic or molar pregnancy (639.8)
labor or delivery (668.1, 669.4)
428: Heart failure
Code, if applicable, heart failure due to hypertension first (402.0-402.9) with fifth-digit 1 or (404.0-404.9) with fifth-digit 1 or 3)
Excludes:
rheumatic (398.91)
that complicating:
abortion (634-638 with.7, 639.8)
ectopic or molar pregnancy (639.8)
labor or delivery (668.1, 669.4)
429: Ill-defined descriptions and complications of heart disease

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