Specific code 2012 ICD-9-CM Diagnosis Code 426.13
Other second degree atrioventricular block
  • Short description: Av block-2nd degree NEC.
  • ICD-9-CM 426.13 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 426.13 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 426.13.
  • More recent version(s) of ICD-9-CM 426.13: 2013 2014.
Disease Synonyms
  • Atrioventricular block, high degree
  • Atrioventricular block, incomplete, mobitz type 1
  • Atrioventricular block, second degree
  • AV block, high degree
  • AV block, Mobitz type 1
  • AV block, second degree
  • Electrocardiogram: partial atrioventricular block - 2:1
  • High degree second degree atrioventricular block
  • Incomplete atrioventricular block with atrioventricular response
  • Intermittent second degree atrioventricular block
  • Mobitz type I incomplete atrioventricular block
  • Mobitz type I second degree atrioventricular block on electrocardiogram
  • Second degree atrioventricular block
Applies To
  • Incomplete atrioventricular block:
    • Mobitz (type) I [Wenckebach's]
    • second degree:
      • NOS
      • Mobitz (type) I
    • with 2:1 atrioventricular response [block]
  • Wenckebach's phenomenon
Convert to ICD-10-CM: 426.13 converts approximately to:
  • 2014 ICD-10-CM I44.1 Atrioventricular block, second degree
ICD-9-CM Volume 2 Index entries containing back-references to 426.13:
  • Block
    • atrioventricular (AV) (incomplete) (partial) 426.10
      • with
      • 2:1 atrioventricular response block 426.13
        • atrioventricular dissociation 426.0
      • first degree (incomplete) 426.11
      • second degree (Mobitz type I) 426.13
      • third degree 426.0
      • complete 426.0
      • congenital 746.86
      • Mobitz (incomplete)
        • type I (Wenckebach's) 426.13
        • type II 426.12
      • partial 426.13
    • 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
  • Mobitz heart block (atrioventricular) 426.10
    • type I (Wenckebach's) 426.13
  • Phenomenon
    • Wenckebach's, heart block (second degree) 426.13
  • Wenckebach's phenomenon, heart block (second degree) 426.13
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 426.13 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.