2008 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.* > 2008 ICD-9-CM Diagnosis 426.3 Other left bundle branch block  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 426.3 can be accessed here. 426.3 is a specific code that can be used to specify a diagnosis 426.3 contains 8 index entries View the ICD-9-CM Volume 1 426.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 426.3 also known as: Left bundle branch block: NOS anterior fascicular with posterior fascicular complete main stem Index entries containing 426.3: Block bundle branch (complete) (false) (incomplete) 426.50 left (complete) (main stem) 426.3 with right bundle branch block 426.53 anterior fascicular 426.2 with posterior fascicular block 426.3 right bundle branch block 426.52 hemiblock 426.2 incomplete 426.2 with right bundle branch block 426.53 posterior fascicular 426.2 with anterior fascicular block 426.3 right bundle branch block 426.51 heart 426.9 bundle branch (complete) (false) (incomplete) 426.50 left (see also Block, bundle branch, left) 426.3 intraventricular (diffuse) (myofibrillar) 426.6 bundle branch (complete) (false) (incomplete) 426.50 left (see also Block, bundle branch, left) 426.3 Bundle branch block (complete) (false) (incomplete) 426.50 left (see also Block, bundle branch, left) 426.3 hemiblock 426.2 Degeneration, degenerative bundle of His 426.50 left 426.3 Sclerosis, sclerotic bundle of His 426.50 left 426.3