I48.91 UNSPECIFIED ATRIAL FIBRILLATION

Code Information

Diagnosis Code: I48.91
Short Description: Unspecified atrial fibrillation
Long Description: Unspecified atrial fibrillation
Code Version: 2025 ICD-10-CM

The code I48.91 is 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)

Synonyms

Accelerated atrioventricular conduction
Atrial fibrillation
Atrial fibrillation due to heart valve disorder
Atrial fibrillation with rapid ventricular response
Controlled atrial fibrillation
Familial atrial fibrillation
Hypercoagulability state
Hypercoagulable state due to atrial fibrillation
Lone atrial fibrillation
Preexcited atrial fibrillation
Rapid atrial fibrillation
Transient cerebral ischemia due to atrial fibrillation

Diagnostic Related Group(s)

The code I48.91 is grouped in the following Diagnostic Related Group(s) MS-DRG V42.0

Cardiac Arrhythmia And Conduction Disorders With Mcc (308)
Cardiac Arrhythmia And Conduction Disorders With Cc (309)
Cardiac Arrhythmia And Conduction Disorders Without Cc/mcc (310)

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
I48.91		427.31	Atrial fibrillation

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description
I48	Atrial fibrillation and flutter
I48.0	Paroxysmal atrial fibrillation
I48.1	Persistent atrial fibrillation
I48.11	Longstanding persistent atrial fibrillation
I48.19	Other persistent atrial fibrillation
I48.2	Chronic atrial fibrillation
I48.20	Chronic atrial fibrillation, unspecified
I48.21	Permanent atrial fibrillation
I48.3	Typical atrial flutter
I48.4	Atypical atrial flutter
I48.9	Unspecified atrial fibrillation and atrial flutter
I48.92	Unspecified atrial flutter

This page was last updated on: 10/1/2024

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