Unspecified atrial fibrillation
- I48.91 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2025 edition of ICD-10-CM I48.91 became effective on October 1, 2024.
- This is the American ICD-10-CM version of I48.91 – other international versions of ICD-10 I48.91 may differ.
The following code(s) above I48.91 contain annotation back-references
that may be applicable to I48.91:
- I00-I99 Diseases of the circulatory system
Approximate Synonyms
- Atrial fibrillation
- Atrial fibrillation with rapid ventricular response
ICD-10-CM I48.91 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):
- 308 Cardiac arrhythmia and conduction disorders with mcc
- 309 Cardiac arrhythmia and conduction disorders with cc
- 310 Cardiac arrhythmia and conduction disorders without cc/mcc
- 791 Prematurity with major problems
- 793 Full term neonate with major problems
Convert I48.91 to ICD-9-CMCode History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- 2024 (effective 10/1/2023): No change
- 2025 (effective 10/1/2024): No change
Diagnosis Index entries containing back-references to I48.91:
- Fibrillation
- atrial or auricular (established) I48.91