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I48.21

✓ Billable

Permanent atrial fibrillation

Diseases of the circulatory system (I00-I99)

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✅ No additional coding notes for I48.21

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Code Information

CodeI48.21
BillableYes
ParentI48.2
CategoryDiseases of the circulatory system (I00-I99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)