ICD-10-CM · FY 2026 APRIL UPDATE
I49
Other cardiac arrhythmias
Diagnosis reference
Nonbillable categoryThis entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.
Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification
Related entries
Up to 30 descendants in this category
| CODE | DESCRIPTION | TYPE |
|---|---|---|
| I49.0 | Ventricular fibrillation and flutter | Category |
| I49.01 | Ventricular fibrillation | Billable |
| I49.02 | Ventricular flutter | Billable |
| I49.1 | Atrial premature depolarization | Billable |
| I49.2 | Junctional premature depolarization | Billable |
| I49.3 | Ventricular premature depolarization | Billable |
| I49.4 | Other and unspecified premature depolarization | Category |
| I49.40 | Unspecified premature depolarization | Billable |
| I49.49 | Other premature depolarization | Billable |
| I49.5 | Sick sinus syndrome | Billable |
| I49.8 | Other specified cardiac arrhythmias | Category |
| I49.81 | Brugada syndrome | Billable |
| I49.82 | Ventricular bigeminy | Billable |
| I49.89 | Other specified cardiac arrhythmias not elsewhere classified | Billable |
| I49.9 | Cardiac arrhythmia, unspecified | Billable |
Use the complete reference
This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.
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