Other forms of heart disease (I30-I5A)
I40: Acute myocarditis

includes
subacute myocarditis

excludes1
acute rheumatic myocarditis (I01.2)
I40.0: Infective myocarditis
I40.1: Isolated myocarditis
I40.8: Other acute myocarditis
I40.9: Acute myocarditis, unspecified

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