ICD-9-CM

421 Acute and subacute endocarditis
421.0: Acute and subacute bacterial endocarditis Endocarditis (acute) (chronic) (subacute): bacterial infective NOS lenta malignant purulent septic ulcerative vegetative Infective aneurysm Subacute bacterial endocarditis [SBE] Use additional code, if desired, to identify infectious organism [e.g., Streptococcus 041.0, Staphylococcus 041.1]
421.1: Acute and subacute infective endocarditis in diseases classified elsewhere Code first underlying disease, as: blastomycosis (116.0) Q fever (083.0) typhoid (fever) (002.0) Excludes: endocarditis (in): Coxsackie (virus) (074.22) gonococcal (098.84) histoplasmosis (115.0-115.9 with fifth-digit 4) meningococcal infection (036.42) monilial (112.81)
421.9: Acute endocarditis, unspecified Endocarditis, acute or subacute Myoendocarditis, acute or subacute Periendocarditis, acute or subacute Excludes: acute rheumatic endocarditis (391.1)

421 Acute and subacute endocarditis

Endocarditis (acute) (chronic) (subacute):

bacterial

infective NOS

lenta

malignant

purulent

septic

ulcerative

vegetative

Infective aneurysm

Subacute bacterial endocarditis [SBE]

Use additional code, if desired, to identify infectious organism [e.g., Streptococcus 041.0, Staphylococcus 041.1]

Code first underlying disease, as:

blastomycosis (116.0)

Q fever (083.0)

typhoid (fever) (002.0)

Excludes:

endocarditis (in):

Coxsackie (virus) (074.22)

gonococcal (098.84)

histoplasmosis (115.0-115.9 with fifth-digit 4)

meningococcal infection (036.42)

monilial (112.81)

Endocarditis, acute or subacute

Myoendocarditis, acute or subacute

Periendocarditis, acute or subacute

Excludes:

acute rheumatic endocarditis (391.1)

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