ICD-10-CM > I00-I99 > I30-I5A > I48 > I48.1 I48.1 Persistent atrial fibrillation Non-Billable/Non-Specific Type 1 Excludes Permanent atrial fibrillation (I48.21) Codes I48.11Longstanding persistent atrial fibrillationI48.19Other persistent atrial fibrillation