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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Acute And Subacute Endocarditis 421.* >

2007 ICD-9-CM Diagnosis 421.1

Acute and subacute infective endocarditis in diseases classified elsewhere

 On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.

The 2009 version of ICD-9-CM 421.1 can be accessed here.

  • 421.1 is a specific code that can be used to specify a diagnosis
  • 421.1 contains 6 index entries
  • View the ICD-9-CM Volume 1 421.* hierarchy

Code first underlying disease, as:

  • blastomycosis (116.0)
  • Q fever (083.0)
  • typhoid (fever) (002.0)

421.1 excludes:

Index entries containing 421.1:

Endocarditis (chronic) (indeterminate) (interstitial) (marantis) (nonbacterial thrombotic) (residual) (sclerotic) (sclerous) (senile) (valvular) 424.90
  • blastomycotic 116.0 [421.1]
  • due to
    • blastomycosis 116.0 [421.1]
    • Q fever 083.0 [421.1]
    • typhoid (fever) 002.0 [421.1]
  • typhoid 002.0 [421.1]
Typhoid (abortive) (ambulant) (any site) (fever) (hemorrhagic) (infection) (intermittent) (malignant) (rheumatic) 002.0
  • endocarditis 002.0 [421.1]