Home > 2011 ICD-9-CM Diagnosis Codes > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Conduction disorders 426-
Specific code 2011 ICD-9-CM Diagnosis Code 426.53
Other bilateral bundle branch block
  • Short description: Bilat bb block NEC.
  • ICD-9-CM 426.53 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 426.53 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2011 version of ICD-9-CM 426.53.
  • More recent version(s) of ICD-9-CM 426.53: 2012 2013 2014 2015.
Convert to ICD-10-CM: 426.53 converts approximately to:
  • 2015/16 ICD-10-CM I45.2 Bifascicular block
Approximate Synonyms
  • Anterior fascicular block, posterior fascicular block AND incomplete right bundle branch block
  • Bifascicular block
  • Bifascicular block on electrocardiogram
  • Bilat bundle branch block
  • Bilateral bundle branch block
  • Bilateral bundle branch block (heart rhythm condition)
  • Bundle branch block, bilateral
  • Right branch block, incomplete anterior fascicular block AND incomplete posterior fascicular block
  • Right bundle branch block AND incomplete left bundle branch block
  • Right bundle branch block with left bundle branch block
  • Right bundle branch block, anterior fascicular block AND incomplete posterior fascicular block
Applies To
  • Bifascicular block NOS
  • Bilateral bundle branch block NOS
  • Right bundle branch with left bundle branch block (incomplete) (main stem)
ICD-9-CM Volume 2 Index entries containing back-references to 426.53:
  • Block
    • bifascicular (cardiac) 426.53
    • bundle branch (complete) (false) (incomplete) 426.50
      • bilateral 426.53
      • 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
      • right 426.4
        • with
          • left bundle branch block (incomplete) (main stem) 426.53
          • left fascicular block 426.53
      • Wilson's type 426.4
    • heart 426.9
      • first degree (atrioventricular) 426.11
      • second degree (atrioventricular) 426.13
      • third degree (atrioventricular) 426.0
      • bundle branch (complete) (false) (incomplete) 426.50
        • bilateral 426.53
        • left (see also Block, bundle branch, left) 426.3
        • right (see also Block, bundle branch, right) 426.4
      • complete (atrioventricular) 426.0
      • congenital 746.86
      • incomplete 426.13
      • intra-atrial 426.6
      • intraventricular NEC 426.6
      • sinoatrial 426.6
      • specified type NEC 426.6
    • intraventricular (diffuse) (myofibrillar) 426.6
      • bundle branch (complete) (false) (incomplete) 426.50
        • bilateral 426.53
        • left (see also Block, bundle branch, left) 426.3
        • right (see also Block, bundle branch, right) 426.4
  • Bundle
    • branch block (complete) (false) (incomplete) 426.50
      • bilateral 426.53
      • left (see also Block, bundle branch, left) 426.3
      • right (see also Block, bundle branch, right) 426.4
 426.52 ICD9Data.com 426.54 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 426.53 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
Free ICD-9-CM Codes
Site Information
Free ICD-10-CM/PCS Codes
Free HCPCS Codes