422: Acute myocarditis
Excludes:
acute rheumatic myocarditis (391.2)
422.9 Other and unspecified acute myocarditis
422.90: Acute myocarditis, unspecified
Acute or subacute (interstitial) myocarditis
422.91: Idiopathic myocarditis
Myocarditis (acute or subacute):
Fiedler's
giant cell
isolated (diffuse) (granulomatous)
nonspecific granulomatous
422.92: Septic myocarditis
Myocarditis, acute or subacute:
pneumococcal
staphylococcal
Use additional code to identify infectious organism [e.g., Staphylococcus 041.1]
Excludes:
myocarditis, acute or subacute:
in bacterial diseases classified elsewhere (422.0)
streptococcal (391.2)
422.93: Toxic myocarditis
422.99: Other

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