I49Header code — not billable
Other cardiac arrhythmias
- Chapter
- 9. Diseases of the circulatory system
- Category
- I49
- Effective date
- October 1, 2026
Related codes in category I49
I49.0Ventricular fibrillation and flutterI49.01Ventricular fibrillationYesI49.02Ventricular flutterYesI49.1Atrial premature depolarizationYesI49.2Junctional premature depolarizationYesI49.3Ventricular premature depolarizationYesI49.4Other and unspecified premature depolarizationI49.40Unspecified premature depolarizationYesI49.49Other premature depolarizationYesI49.5Sick sinus syndromeYesI49.8Other specified cardiac arrhythmiasI49.81Brugada syndromeYes
Frequently asked questions
What is ICD-10 code I49?
I49 is an ICD-10-CM diagnosis code for Other cardiac arrhythmias.
Is I49 a billable code?
No. I49 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is I49 in?
I49 falls under Chapter 9: Diseases of the circulatory system.
When did I49 become effective?
I49 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I49?
I49 belongs to category I49, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.