I48.9 UNSPECIFIED ATRIAL FIBRILLATION AND ATRIAL FLUTTER

Code Information

• Diagnosis Code: I48.9
• Short Description: Unspecified atrial fibrillation and atrial flutter
• Long Description: Unspecified atrial fibrillation and atrial flutter
• Code Version: 2025 ICD-10-CM

The code I48.9 is NOT VALID for claim submission

Code Classification

• Diseases of the circulatory system (I00–I99)
  • Other forms of heart disease (I30-I5A)
    • Atrial fibrillation and flutter (I48)