I49
⚠ Non-billable (Header)Other cardiac arrhythmias
Diseases of the circulatory system (I00-I99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
📋 Code Instructions
- • Code first: cardiac arrhythmia complicating:
- • Code first: abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- • Code first: obstetric surgery and procedures (O75.4)
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • bradycardia NOS (R00.1)
- • neonatal dysrhythmia (P29.1-)
- • sinoatrial bradycardia (R00.1)
- • sinus bradycardia (R00.1)
- • vagal bradycardia (R00.1)
Child Codes (8)
I49.0Ventricular fibrillation and flutterI49.1Atrial premature depolarizationI49.2Junctional premature depolarizationI49.3Ventricular premature depolarizationI49.4Other and unspecified premature depolarizationI49.5Sick sinus syndromeI49.8Other specified cardiac arrhythmiasI49.9Cardiac arrhythmia, unspecified
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CodeI49
BillableNo — Header code
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes25 note(s)
Child codes8
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)