2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Conduction Disorders 426.* > 2006 ICD-9-CM Diagnosis 426.51 Right bundle branch block and left posterior fascicular block View the most recent version of ICD-9-CM 426.51 426.51 is a specific code that can be used to specify a diagnosis 426.51 contains 2 index entries View the ICD-9-CM Volume 1 426.* hierarchy  Index entries containing 426.51: Block bundle branch (complete) (false) (incomplete) 426.50 left (complete) (main stem) 426.3 posterior fascicular 426.2 with right bundle branch block 426.51 right 426.4 with left fascicular block 426.53 posterior 426.51