420.91 AC IDIOPATH PERICARDITIS

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Code Information

Diagnosis Code: 420.91

Short Description: Ac idiopath pericarditis

Long Description: Acute idiopathic pericarditis

Code Classification:

Diseases of the circulatory system (390–459)
- Other forms of heart disease (420-429)
  - 420 Acute pericarditis
    - 420.91 Ac idiopath pericarditis

Code Version: 2015 ICD-9-CM

References to Index of Diseases and Injuries

The code 420.91 has the following ICD-9-CM references to the Index of Diseases and Injuries

Pericarditis (granular) (with decompensation) (with effusion) 423.9
- acute (nonrheumatic) 420.90
  - benign 420.91
  - idiopathic 420.91
  - nonspecific 420.91
  - viral 420.91
- idiopathic (acute) 420.91
- nonspecific 420.91
- viral (acute) 420.91

Crosswalk Information

The code 420.91 converts into the following ICD-10 code(s):

ICD-9 Code		ICD-10 Code	ICD-10 Description
420.91		I30.0	Acute nonspecific idiopathic pericarditis

This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code	ICD-9 Description
420.0	Acute pericarditis in diseases classified elsewhere
420.90	Acute pericarditis, unspecified
420.99	Other acute pericarditis

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

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