Arrhythmia ICD-10-CM Codes | 2023

Discover the latest ICD-10-CM codes for Arrhythmia for 2023, which are billable, essential clinical info, related synonyms, & unique FAQs in our complete

By Telita Montales on Aug 8, 2025.

Fact Checked by Ericka Pingol.

Use Code

What ICD-10 Codes Are Used for Arrhythmia?

Arrhythmia is a condition with a wide range of types, each with its own ICD-10 code. Here are some common arrhythmia ICD codes:

I49.01 - Ventricular fibrillation: A life-threatening arrhythmia characterized by rapid, irregular heartbeats.
I49.02 - Ventricular flutter: A quick but regular arrhythmia originating in the ventricles.
I48.0 - Paroxysmal atrial fibrillation: An irregular and often rapid heart rate that comes and goes.
I48.1 - Persistent atrial fibrillation: This atrial fibrillation lasts longer than seven days.
I48.2 - Chronic atrial fibrillation: Atrial fibrillation that lasts longer than one year.

Which Arrhythmia ICD Codes Are Billable?

I49.01 - Yes, this code is billable and is used to indicate a diagnosis of ventricular fibrillation.
I49.02 - Yes, this code is billable and denotes a ventricular flutter case.
I48.0 - Yes, it's billable, representing cases of paroxysmal atrial fibrillation.
I48.1 - Yes, this code is billable and indicates a diagnosis of persistent atrial fibrillation.
I48.2 - Yes, this code is billable and represents cases of chronic atrial fibrillation.

Clinical Information

Arrhythmias are abnormalities of the heart rate or rhythm. They can cause the heart to beat too fast, slow, or irregularly. This may happen because:

The electrical signals in the heart are delayed or blocked.
The heart's electrical system is triggered by an abnormal site, leading to an extra beat.
The heart's structure changes due to heart disease.

Synonyms Include:

Irregular Heartbeat
Heart Rhythm Disorder
Dysrhythmia
Cardiac Arrhythmia
Heart Palpitations

Commonly asked questions

Arrhythmia symptoms can include palpitations, feeling a pause between heartbeats, lightheadedness, dizziness, fainting, shortness of breath, and chest pain. However, some arrhythmias can be asymptomatic.

While some arrhythmias can be life-threatening, others are less dangerous but can still lead to complications and discomfort. It's vital to get any irregularities in your heartbeat checked by a healthcare professional.

Managing arrhythmias involves lifestyle changes such as avoiding triggers (like caffeine or alcohol), managing stress, quitting smoking, maintaining a healthy weight, and regular exercise. Medications or procedures may also be necessary, depending on the type and severity of the arrhythmia.

EHR and practice management software

Get started for free

*No credit card required

Start for free

Free

$0/usd

Unlimited clients

Telehealth

1GB of storage

Client portal text