2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Acute Rheumatic Fever 390-392 > 2006 ICD-9-CM Diagnosis 391 Rheumatic fever with heart involvement View the most recent version of ICD-9-CM 391 The most important manifestation of and sequel to rheumatic fever, i.e., any cardiac involvement in rheumatic fever. 391 is a non-specific code that cannot be used to specify a diagnosis 391 Excludes chronic heart diseases of rheumatic origin (-398.9) unless rheumatic fever is also present or there is evidence of recrudescence or activity of the rheumatic process