| I48 | Atrial fibrillation and flutter | NON-BILLABLE CODE |
| I48.0 | Paroxysmal atrial fibrillation | BILLABLE CODE |
| I48.1 | Persistent atrial fibrillation | NON-BILLABLE CODE |
| I48.11 | Longstanding persistent atrial fibrillation | BILLABLE CODE |
| I48.19 | Other persistent atrial fibrillation | BILLABLE CODE |
| I48.2 | Chronic atrial fibrillation | NON-BILLABLE CODE |
| I48.21 | Permanent atrial fibrillation | BILLABLE CODE |
| I48.3 | Typical atrial flutter | BILLABLE CODE |
| I48.4 | Atypical atrial flutter | BILLABLE CODE |
| I48.9 | Unspecified atrial fibrillation and atrial flutter | NON-BILLABLE CODE |
| I48.91 | Unspecified atrial fibrillation | BILLABLE CODE |
| I48.92 | Unspecified atrial flutter | BILLABLE CODE |
