ICD-9 Diagnosis Code 426.4

Rt bundle branch block

Diagnosis Code 426.4

ICD-9: 426.4
Short Description: Rt bundle branch block
Long Description: Right bundle branch block
This is the 2014 version of the ICD-9-CM diagnosis code 426.4

Code Classification
  • Diseases of the circulatory system
    • Other forms of heart disease (420-429)
      • 426 Conduction disorders

Information for Medical Professionals

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Index of Diseases and Injuries
References found for the code 426.4 in the Index of Diseases and Injuries:

Information for Patients


Also called: Irregular heartbeat

An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern. When the heart beats faster than normal, it is called tachycardia. When the heart beats too slowly, it is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and fast heart beat.

Many factors can affect your heart's rhythm, such as having had a heart attack, smoking, congenital heart defects, and stress. Some substances or medicines may also cause arrhythmias.

Symptoms of arrhythmias include

  • Fast or slow heart beat
  • Skipping beats
  • Lightheadedness or dizziness
  • Chest pain
  • Shortness of breath
  • Sweating

Your doctor can run tests to find out if you have an arrhythmia. Treatment to restore a normal heart rhythm may include medicines, an implantable cardioverter-defibrillator (ICD) or pacemaker, or sometimes surgery.

NIH: National Heart, Lung, and Blood Institute

  • Arrhythmias
  • Atrial fibrillation or flutter
  • Cardiac ablation procedures
  • Cardioversion
  • Ectopic heartbeat
  • Electrocardiogram
  • Exercise stress test
  • Heart block
  • Heart palpitations
  • His bundle electrography
  • Holter monitor (24h)
  • Intracardiac electrophysiology study (EPS)
  • Multifocal atrial tachycardia
  • Paroxysmal supraventricular tachycardia (PSVT)
  • Sick sinus syndrome
  • Ventricular fibrillation
  • Ventricular tachycardia
  • Wolff-Parkinson-White syndrome

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