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I49 Other cardiac arrhythmias

ICD-10-CM category I49 sits in Chapter 9 (Diseases of the circulatory system, I00-I99). It contains 12 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

I49.0 Ventricular fibrillation and flutterI49.4 Other and unspecified premature depolarizationI49.8 Other specified cardiac arrhythmias

Billable codes in I49

CodeDescription
I49.01Ventricular fibrillation
I49.02Ventricular flutter
I49.1Atrial premature depolarization
I49.2Junctional premature depolarization
I49.3Ventricular premature depolarization
I49.40Unspecified premature depolarization
I49.49Other premature depolarization
I49.5Sick sinus syndrome
I49.81Brugada syndrome
I49.82Ventricular bigeminy
I49.89Other specified cardiac arrhythmias not elsewhere classified
I49.9Cardiac arrhythmia, unspecified

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