ICD Code I45.81

ICD code I45.81 is Long QT syndrome, a heart rhythm condition that can cause fast, chaotic heartbeats and increase the risk of sudden cardiac events.

1. Documented prolonged QT interval on electrocardiogram (ECG), typically QTc > 450 ms in males or > 470 ms in females

2. History of unexplained syncope, seizures, or cardiac arrest

3. Family history of sudden cardiac death or known long QT syndrome

4. Presence of torsades de pointes or other polymorphic ventricular tachycardia

5. Symptoms such as palpitations, dizziness, or fainting episodes, especially during exercise or emotional stress

6. Genetic testing confirming pathogenic mutation associated with long QT syndrome

Relevant CPT codes that may be used to treat ICD code I45.81 include:

93000 – Electrocardiogram, routine ECG with at least 12 leads; with interpretation and report

93224 – External electrocardiographic recording up to 48 hours by continuous rhythm recording and storage; includes recording, scanning analysis with report, review and interpretation

93268 – External patient and physician-activated electrocardiographic rhythm derived event recording with memory loop, 30 days

93279-93289 – Insertion, programming, and evaluation of implantable loop recorder

33285 – Insertion of subcutaneous cardiac rhythm monitor

33249 – Insertion or replacement of permanent implantable defibrillator system, with transvenous lead(s)

93620 – Comprehensive electrophysiologic evaluation including insertion and repositioning of multiple electrode catheters with induction or attempted induction of arrhythmia

93653 – Comprehensive electrophysiologic evaluation including transseptal catheterization, with ablation

99457 – Remote physiologic monitoring treatment management services, 20 minutes or more of clinical staff/physician/other qualified healthcare professional time in a calendar month

These CPT codes are commonly associated with the management and treatment of I45.81.

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