I48.4 Atypical atrial flutter
ICD-10-CM · CMS code reference
Official ICD-10-CM description: Atypical atrial flutter
Related codes
I48.0Paroxysmal atrial fibrillation ICD-10-CMI48.11Longstanding persistent atrial fibrillation ICD-10-CMI48.19Other persistent atrial fibrillation ICD-10-CMI48.20Chronic atrial fibrillation, unspecified ICD-10-CMI48.21Permanent atrial fibrillation ICD-10-CMI48.3Typical atrial flutter ICD-10-CMI48.91Unspecified atrial fibrillation ICD-10-CMI48.92Unspecified atrial flutter ICD-10-CM
Common questions
Is I48.4 a billable code?
Yes. I48.4 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.