Non-Billable / Non-Specific Code
ICD-10-CM I48.1 is the diagnosis code for Persistent atrial fibrillation. This code falls under the section "Other forms of heart disease" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as I48.1. They are mutually exclusive:
Understanding where I48.1 sits in the ICD-10-CM classification helps ensure proper coding:
No, I48.1 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I48.1 is the ICD-10-CM diagnosis code for "Persistent atrial fibrillation". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of I48.1 is I48 ("Atrial fibrillation and flutter"). I48.1 provides a more specific classification within this category.
I48.1 is located in Section I30-I5A — "Other forms of heart disease" within Chapter 9 of the ICD-10-CM Tabular List.
I48.1 has 2 sub-code(s) that provide more specific detail: I48.11, I48.19.
Use I48.1 when the patients documented diagnosis matches "Persistent atrial fibrillation" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Persistent atrial fibrillation is I48.1.
No, I48.1 is non-billable. Use a more specific sub-code for primary diagnosis billing.
I48.1 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I48.1 include: Permanent atrial fibrillation (I48.21).
Yes, I48.1 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.