Diagnosis Code: 422.91

Short Description: Idiopathic myocarditis

Long Description: Idiopathic myocarditis

Code Classification:

• Diseases of the circulatory system (390–459)
  • Other forms of heart disease (420-429)
    • 422 Acute myocarditis
      • 422.91 Idiopathic myocarditis

Code Version: 2015 ICD-9-CM

References to Index of Diseases and Injuries

The code 422.91 has the following ICD-9-CM references to the Index of Diseases and Injuries

• Abramov-Fiedler myocarditis (acute isolated myocarditis) 422.91

• Fiedler's
  • myocarditis or syndrome (acute isolated myocarditis) 422.91

• Myocarditis (fibroid) (interstitial) (old) (progressive) (senile) (with arteriosclerosis) 429.0
  • acute or subacute (interstitial) 422.90
    • idiopathic 422.91
  • eosinophilic 422.91
  • Fiedler's (acute) (isolated) (subacute) 422.91
  • giant cell (acute) (subacute) 422.91
  • granulomatous (idiopathic) (isolated) (nonspecific) 422.91
  • idiopathic 422.91
    • granulomatous 422.91
  • isolated (diffuse) (granulomatous) 422.91
  • specific (giant cell) (productive) 422.91
  • viral, except Coxsackie 422.91
    • Coxsackie 074.23
    • of newborn (Coxsackie) 074.23

• Syndrome - see also Disease
  • Fiedler's (acute isolated myocarditis) 422.91

Crosswalk Information

The code 422.91 converts into the following ICD-10 code(s):

Similar Codes

This page was last updated on: 10/1/2014

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