ICD-10-CM · Chapter 9 · I00-I99
I49 Other cardiac arrhythmias
Excludes 2 (not included here)
- bradycardia NOS (R00.1)
- neonatal dysrhythmia (P29.1-)
- sinoatrial bradycardia (R00.1)
- sinus bradycardia (R00.1)
- vagal bradycardia (R00.1)
Code First
- cardiac arrhythmia complicating:
- abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- obstetric surgery and procedures (O75.4)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| I49..0 | Ventricular fibrillation and flutter | No |
| I49..01 | Ventricular fibrillation | Yes |
| I49..02 | Ventricular flutter | Yes |
| I49..1 | Atrial premature depolarization | Yes |
| I49..2 | Junctional premature depolarization | Yes |
| I49..3 | Ventricular premature depolarization | Yes |
| I49..4 | Other and unspecified premature depolarization | No |
| I49..40 | Unspecified premature depolarization | Yes |
| I49..49 | Other premature depolarization | Yes |
| I49..5 | Sick sinus syndrome | Yes |
| I49..8 | Other specified cardiac arrhythmias | No |
| I49..81 | Brugada syndrome | Yes |
| I49..82 | Ventricular bigeminy | Yes |
| I49..89 | Other specified cardiac arrhythmias not elsewhere classified | Yes |
| I49..9 | Cardiac arrhythmia, unspecified | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category I49:
- Arrhythmia — Arritmia
Last reviewed: September 2026