ICD9Data.com
2008 ICD-9-CM Diagnosis Code 420.0
Acute pericarditis in diseases classified elsewhere
2008 ICD-9-CM Diagnosis Code 420.9
Other and unspecified acute pericarditis
2008 ICD-9-CM Diagnosis Code 420.90
Acute pericarditis unspecified
2008 ICD-9-CM Diagnosis Code 420.91
Acute idiopathic pericarditis
2008 ICD-9-CM Diagnosis Code 420.99
Other acute pericarditis