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 426.82
Long QT syndrome
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 426.82 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 426.82 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: 426.82 converts directly to:
  • 2015/16 ICD-10-CM I45.81 Long QT syndrome
Approximate Synonyms
  • Congenital long QT syndrome
  • Congenital long QT syndrome (at birth)
  • Prolonged QT interval syndrome
Clinical Information
  • A condition that is characterized by episodes of fainting (syncope) and varying degree of ventricular arrhythmia as indicated by the prolonged qt interval. The inherited forms are caused by mutation of genes encoding cardiac ion channel proteins. The two major forms are romano-ward syndrome and jervell-lange nielsen syndrome
  • A ventricular arrhythmia characterized by syncopal episodes and a long qt interval, sometimes leading to sudden death due to paroxysmal ventricular arrhythmia. This arrhythmia is associated with a prolongation of repolarisation following depolarization of the cardiac ventricles. The prolongation of the q-t interval combined with torsades de pointes manifests as several different forms; some may be acquired or congenital; some may lead to serious arrhythmia and sudden cardiac death. (nci)
  • A ventricular arrhythmia characterized by syncopal episodes and a long qt interval, sometimes leading to sudden death due to paroxysmal ventricular arrhythmia. This arrhythmia is associated with a prolongation of repolarization following depolarization of the cardiac ventricles. The prolongation of the q-t interval combined with torsades de pointes manifests as several different forms; some may be acquired or congenital; some may lead to serious arrhythmia and sudden cardiac death
  • Prolongation of q-t interval combined with torsades de pointes and manifests as several different forms; may be acquired or congenital; may lead to serious arrhythmia and sudden cardiac death
ICD-9-CM Volume 2 Index entries containing back-references to 426.82:
  • Jervell-Lange-Nielsen syndrome 426.82
  • Prolonged, prolongation
    • QT interval 794.31
      • syndrome 426.82
  • Romano-Ward syndrome (prolonged QT interval syndrome) 426.82
  • Syndrome - see also Disease
    • Jervell-Lange-Nielsen 426.82
    • QT interval prolongation 426.82
    • Romano-Ward (prolonged QT interval syndrome) 426.82
 426.81 ICD9Data.com 426.89 
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