ICD-10-CM Code I45.89

Other specified conduction disorders

Version 2021 Billable Code

Valid for Submission

I45.89 is a billable code used to specify a medical diagnosis of other specified conduction disorders. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code I45.89 might also be used to specify conditions or terms like accelerated atrioventricular conduction, asymptomatic sinoatrial node dysfunction, atrioventricular conduction disorder, atrioventricular dissociation, atrioventricular nodal function - finding, av junctional tachycardia, etc

Short Description:Other specified conduction disorders
Long Description:Other specified conduction disorders

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code I45.89:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Atrioventricular AV dissociation
  • Interference dissociation
  • Isorhythmic dissociation
  • Nonparoxysmal AV nodal tachycardia

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I45.89 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Accelerated atrioventricular conduction
  • Asymptomatic sinoatrial node dysfunction
  • Atrioventricular conduction disorder
  • Atrioventricular dissociation
  • Atrioventricular nodal function - finding
  • AV junctional tachycardia
  • AV node arrhythmia
  • Chronotropic incompetence
  • Concealed accessory pathway
  • Dissociated atrioventricular nodal function
  • Electromechanical dissociation
  • Electro-mechanical dissociation due to pacemaker
  • Electromechanical dissociation with successful resuscitation
  • Familial cardiomyopathy
  • Familial dilated cardiomyopathy with conduction defect due to LMNA mutation
  • Intraventricular conduction defect
  • Malfunction from artificial pacing
  • Nodal function - finding
  • Nodal function - finding
  • Nonparoxysmal AV nodal tachycardia
  • Progressive familial heart block
  • Progressive familial heart block, type IB
  • Rhythm from artificial pacing
  • Sinus node dysfunction
  • Sinus node function - finding
  • Supraventricular bigeminy

Diagnostic Related Groups

The ICD-10 code I45.89 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert I45.89 to ICD-9

  • 426.89 - Conduction disorder NEC

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Other forms of heart disease (I30-I52)
      • Other conduction disorders (I45)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Also called: Irregular heartbeat

An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern. When the heart beats faster than normal, it is called tachycardia. When the heart beats too slowly, it is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and fast heart beat.

Many factors can affect your heart's rhythm, such as having had a heart attack, smoking, congenital heart defects, and stress. Some substances or medicines may also cause arrhythmias.

Symptoms of arrhythmias include

  • Fast or slow heart beat
  • Skipping beats
  • Lightheadedness or dizziness
  • Chest pain
  • Shortness of breath
  • Sweating

Your doctor can run tests to find out if you have an arrhythmia. Treatment to restore a normal heart rhythm may include medicines, an implantable cardioverter-defibrillator (ICD) or pacemaker, or sometimes surgery.

NIH: National Heart, Lung, and Blood Institute

  • Arrhythmias (Medical Encyclopedia)
  • Atrial fibrillation or flutter (Medical Encyclopedia)
  • Cardiac ablation procedures (Medical Encyclopedia)
  • Ectopic heartbeat (Medical Encyclopedia)
  • Electrocardiogram (Medical Encyclopedia)
  • Exercise stress test (Medical Encyclopedia)
  • Heart palpitations (Medical Encyclopedia)
  • Holter monitor (24h) (Medical Encyclopedia)
  • Paroxysmal supraventricular tachycardia (PSVT) (Medical Encyclopedia)
  • Ventricular tachycardia (Medical Encyclopedia)
  • Wolff-Parkinson-White syndrome (Medical Encyclopedia)

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