2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Heart Failure 428.* > 2006 ICD-9-CM Diagnosis 428.21 Acute systolic heart failure View the most recent version of ICD-9-CM 428.21 428.21 is a specific code that can be used to specify a diagnosis 428.21 contains 1 index entry View the ICD-9-CM Volume 1 428.* hierarchy  Index entries containing 428.21: Failure, failed heart (acute) (sudden) 428.9 systolic 428.20 acute 428.21