2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > 2006 ICD-9-CM Diagnosis 423 Other diseases of pericardium View the most recent version of ICD-9-CM 423 423 is a non-specific code that cannot be used to specify a diagnosis 423 Excludes that specified as rheumatic (393)