I45.81

Approximate Synonyms

• Acquired long qt syndrome

• Acquired long qt syndrome heart)

• Congenital long qt syndrome

• Congenital long qt syndrome at birth)

• Prolonged qt interval syndrome

• Torsades de pointes

• Torsades type ventricular tachycardia

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 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.

Details

• I45.81 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM I45.81 became effective on October 1, 2022.

• This is the American ICD-10-CM version of I45.81 – other international versions of ICD-10 I45.81 may differ.