ICD-10-CM · Chapter 9 · I00-I99
I48 Atrial fibrillation and flutter
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| I48..0 | Paroxysmal atrial fibrillation | Yes |
| I48..1 | Persistent atrial fibrillation | No |
| I48..11 | Longstanding persistent atrial fibrillation | Yes |
| I48..19 | Other persistent atrial fibrillation | Yes |
| I48..2 | Chronic atrial fibrillation | No |
| I48..20 | Chronic atrial fibrillation, unspecified | Yes |
| I48..21 | Permanent atrial fibrillation | Yes |
| I48..3 | Typical atrial flutter | Yes |
| I48..4 | Atypical atrial flutter | Yes |
| I48..9 | Unspecified atrial fibrillation and atrial flutter | No |
| I48..91 | Unspecified atrial fibrillation | Yes |
| I48..92 | Unspecified atrial flutter | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category I48:
- Atrial Fibrillation — Fibrilación auricular
Last reviewed: September 2026