Specific code 2014 ICD-9-CM Diagnosis Code 426.82
Long QT syndrome
  • Billable Code
  • ICD-9-CM 426.82 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 426.82 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • 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.
Convert to ICD-10-CM: 426.82 converts directly to:
  • 2014 ICD-10-CM I45.81 Long QT syndrome
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
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 426.82 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 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.