ICD-10 Code
International Classification of Diseases, 10th Revision
May 29, 2017

See: Unspecified atrial fibrillation and atrial flutter

  ICD-10 Code for Unspecified atrial fibrillation I48.91

I48.91 is a valid1 ICD 10 diagnosis code.

I48.91 is valid for submission for HIPAA-covered transactions.

Chapter 9 Diseases of the circulatory system (I00-I99)
Section I30-I52 Other forms of heart disease (I30-I52)
Category I48 Atrial fibrillation and flutter

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.

Related Terms to “Unspecified atrial fibrillation”

  • Fibrillation
    • atrial or auricular(established) - I48.91
See the 2017 ICD-10-CM Coding Guidelines.

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.