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2. ICD-10 Codes
3. Chapter - I00-I99
4. Section - I30-I5A
5. Category - I48
6. I48.91

I48.91 - Unspecified atrial fibrillation

• Applicable to Unspecified atrial fibrillation
• The 2025 edition of ICD10-CM I48.91 became effective on October 1, 2024.
• This is the American ICD10-CM version of I48.91 - other international versions of ICD10 I48.91 may differ.
• I48.91 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above I48.91 contain annotation back-references that may be applicable to I48.91:

• Chapter: I00-I99 - Diseases of the circulatory system
• Section: I30-I5A - Other forms of heart disease
• Category: I48 - Atrial fibrillation and flutter

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.