ICD-10-CM>I00-I99>I30-I5A>I40I40Acute myocarditisNon-Billable/Non-SpecificIncludessubacute myocarditisType 1 Excludesacute rheumatic myocarditis (I01.2)CodesI40.0Infective myocarditisI40.1Isolated myocarditisI40.8Other acute myocarditisI40.9Acute myocarditis, unspecified