Loop Recorder ICD-10 Coding: Navigating The Guidelines

Loop Recorder ICD 10

A loop recorder is a small device that is implanted under the skin to monitor the heart’s electrical activity. It is used to diagnose and monitor heart rhythm disorders, such as arrhythmias. In this article, we will discuss loop recorder ICD 10 codes, diagnostic related groups (MS-DRG), conversion to ICD-9 codes, code history, clinical information, causes, symptoms, diagnosis, and treatment.

Code Information

The ICD-10 code for a loop recorder is Z45.018. This code is used to identify patients who have had a loop recorder implanted for monitoring purposes. It is important for accurate billing and tracking of patients with this device.

Diagnostic Related Groups (MS-DRG)

Loop recorder: What it is, why doctors use it, and more
Loop recorder: What it is, why doctors use it, and more

The diagnostic related group (DRG) for a loop recorder implantation is DRG 238 – Major Cardiovascular Procedures with MCC. This DRG is used for cases where a major cardiovascular procedure is performed with a major complication or comorbidity.

Convert to ICD-9 Code

To convert the loop recorder ICD-10 code (Z45.018) to an ICD-9 code, you would use the code 37.78 – Implantation of cardiac rhythm management device. This code is used to identify the implantation of any type of cardiac rhythm management device, including loop recorders.

Code History

Mastering Implantable Loop Recorder Coding: A Comprehensive Guide
Mastering Implantable Loop Recorder Coding: A Comprehensive Guide

The ICD-10 code for loop recorders was introduced in 2016 as part of the larger switch from ICD-9 to ICD-10 coding. This change was made to provide more specific and detailed codes for medical procedures and devices.

Approximate Synonyms

Some approximate synonyms for loop recorders include cardiac event monitors, implantable loop recorders, and implantable cardiac monitors. These devices all serve the same purpose of monitoring the heart’s electrical activity.

Clinical Information

Loop recorders are used to monitor and record the heart’s electrical activity over an extended period of time. This information can help diagnose and manage arrhythmias, fainting spells, and other heart rhythm disorders.


The need for a loop recorder implantation is typically due to a suspected heart rhythm disorder, such as atrial fibrillation, bradycardia, or tachycardia. These conditions can cause symptoms like dizziness, fainting, palpitations, and chest pain.


Symptoms that may warrant a loop recorder implantation include palpitations, dizziness, fainting spells, chest pain, shortness of breath, and fatigue. These symptoms can be signs of an underlying heart rhythm disorder that requires monitoring.


To diagnose a heart rhythm disorder, a healthcare provider may order tests such as an electrocardiogram (EKG), Holter monitor, event monitor, or loop recorder. The loop recorder is particularly useful for capturing intermittent arrhythmias that may not be detected by other devices.


Treatment for a heart rhythm disorder may include medication, lifestyle changes, cardiac ablation, or implantation of a pacemaker or defibrillator. The loop recorder can help guide treatment decisions by providing accurate data on the heart’s electrical activity.


In conclusion, loop recorder ICD 10 coding is essential for accurately documenting and tracking patients with implanted devices for heart rhythm monitoring. These devices play a critical role in diagnosing and managing heart rhythm disorders, and the specific ICD-10 code Z45.018 helps healthcare providers identify and bill for these procedures.


1. How long does a loop recorder typically stay implanted?

A loop recorder is typically implanted for up to 3 years, but some devices may last longer depending on the battery life.

2. Can a loop recorder be removed once it is implanted?

Yes, a loop recorder can be removed if it is no longer needed or if the patient experiences complications.

3. Are there any risks associated with loop recorder implantation?

Like any medical procedure, there are risks associated with loop recorder implantation, such as infection, bleeding, or device malfunction.

4. How often should a loop recorder be checked by a healthcare provider?

A healthcare provider will typically check the loop recorder during regular follow-up

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