myocarditis (in):

Chagas' disease (chronic) (B57.2)

acute (B57.0)

coxsackie (virus) infection (B33.22)

diphtheritic (A36.81)

gonococcal (A54.83)

influenzal (J09.X9, J10.82, J11.82)

meningococcal (A39.52)

mumps (B26.82)

rheumatoid arthritis (M05.31)

sarcoid (D86.85)

syphilis (A52.06)

toxoplasmosis (B58.81)

tuberculous (A18.84)