Long QT syndrome
ICD-10 I45.81 is a billable code used to indicate a diagnosis of long qt syndrome.
Long QT syndrome (LQTS) is a cardiac condition characterized by an extended QT interval on an electrocardiogram (ECG), which can lead to life-threatening arrhythmias such as Torsades de Pointes. The QT interval represents the time it takes for the heart's ventricles to depolarize and repolarize after each heartbeat. The condition can be congenital, resulting from genetic mutations affecting ion channels, or acquired due to medications, electrolyte imbalances, or other medical conditions. Clinically, patients may present with palpitations, syncope, or seizures, particularly during physical exertion or emotional stress. The anatomy involved primarily includes the heart's electrical conduction system, particularly the ventricles. Disease progression can lead to serious complications, including sudden cardiac arrest. Diagnostic considerations include a thorough patient history, family history of sudden cardiac death, and ECG analysis. Genetic testing may be warranted in congenital cases. Management often involves lifestyle modifications, avoidance of triggering medications, and in some cases, the use of beta-blockers or implantable cardioverter-defibrillators (ICDs).
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
I45.81 specifically covers Long QT syndrome, which can be either congenital or acquired. It includes conditions where the QT interval is prolonged, leading to increased risk of arrhythmias. Diagnostic criteria typically involve an ECG showing a QT interval exceeding 450 ms in men and 460 ms in women.
I45.81 should be used when the primary diagnosis is Long QT syndrome, particularly when the etiology is not specified as acquired. If the prolonged QT is due to medications or other identifiable causes, I45.82 may be more appropriate.
Documentation should include a detailed ECG report showing the prolonged QT interval, patient history of symptoms such as syncope or palpitations, and any relevant family history of cardiac issues. Genetic testing results may also support the diagnosis in congenital cases.
