Home > 2015 ICD-9-CM Diagnosis Codes > Diseases Of The Circulatory System 390-459 > Other Forms Of Heart Disease 420-429 > Conduction disorders 426-
Specific code 2015 ICD-9-CM Diagnosis Code 426.53
Other bilateral bundle branch block
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • 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).
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
Clinical Information
  • An electrocardiographic finding comprising right bundle branch block and left anterior fascicular block, or right bundle branch block and left posterior fascicular block. Defects occuring in two of the three divisions of the conduction system of the heart are considered bifascicular blocks. Technically left bundle branch block may be considered a bifascicular block. (nci)
  • An electrocardiographic finding comprising right bundle branch block and left anterior fasicular block, or right bundle branch block and left posterior fasicular block. Defects occuring in two of the three divisions of the conduction system of the heart are considered bifasicular blocks. Technically left bundle branch block may be considered a bifasicular 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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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