Atrial Fibrillation ICD-10-CM codes
ICD-10-CM codes for atrial fibrillation, including paroxysmal, persistent, longstanding persistent, chronic, and permanent AFib.
13 codes, 9 billable. FY2027, valid from October 1, 2026. In chapter 9: Diseases of the Circulatory System.
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How to code Atrial Fibrillation
Category I48 separates paroxysmal atrial fibrillation (I48.0), persistent (I48.11), longstanding persistent (I48.19), chronic and permanent (I48.21), and unspecified (I48.91).
Paroxysmal AFib terminates on its own or with intervention within 7 days; persistent lasts beyond 7 days; permanent is AFib the provider and patient have decided not to correct. Code the most specific documented form.
A history of resolved AFib with no current treatment is reported with Z86.79 (personal history of other diseases of the circulatory system), not with an I48 code.
All Atrial Fibrillation codes
- I48Atrial fibrillation and flutter
- I48.0Paroxysmal atrial fibrillation
- I48.1Persistent atrial fibrillation
- I48.11Longstanding persistent atrial fibrillation
- I48.19Other persistent atrial fibrillation
- I48.2Chronic atrial fibrillation
- I48.20Chronic atrial fibrillation, unspecified
- I48.21Permanent atrial fibrillation
- I48.3Typical atrial flutter
- I48.4Atypical atrial flutter
- I48.9Unspecified atrial fibrillation and atrial flutter
- I48.91Unspecified atrial fibrillation
- I48.92Unspecified atrial flutter
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