I48.0

ICD-10Billable

Paroxysmal atrial fibrillation

Official ICD-10-CM descriptor (FY2026)

Paroxysmal atrial fibrillation

I48.0 is valid for submission on a claim — CMS flags it as a billable, specific code.

Related codes in I48

I48.1Persistent atrial fibrillationcategory
I48.2Chronic atrial fibrillationcategory
I48.3Typical atrial flutter
I48.4Atypical atrial flutter
I48.9Unspecified atrial fibrillation and atrial fluttercategory

Where this code sits

Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: Other forms of heart disease (I30-I5A)
Parent code: I48

Krasyn AI Coder

Get code suggestions automatically as you type notes. Free for 50 analyses.

Install for Chrome — free

Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.