2024 ICD-10-CM Diagnosis Code I45.89

Approximate Synonyms

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
• Atrial premature depolarization with aberrant ventricular conduction
• Atrial tachycardia
• 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 cardiac pacemaker
• Electromechanical dissociation with successful resuscitation
• Familial atrial tachyarrhythmia, infra-Hisian cardiac conduction disease
• 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

Clinical Information

• Atrial Tachycardia

  a disorder characterized by an electrocardiographic finding of an organized, regular atrial rhythm with atrial rate between 101 and 240 beats per minute. the p wave morphology must be distinct from the sinus p wave morphology. (cdisc)

• Atrial Tachycardia by ECG Finding|ATRIAL TACHYCARDIA|Atrial Tachycardia|Atrial Tachycardia by EKG Finding|Atrial tachycardia

  an electrocardiographic finding of an organized, regular atrial rhythm with atrial rate between 101 and 240 beats per minute. the p wave morphology must be distinct from the sinus p wave morphology. (cdisc)

• Atrial Tachycardia With AV Block by ECG Finding|ATRIAL TACHYCARDIA WITH AV BLOCK

  an electrocardiographic recording that demonstrates atrial tachycardia without 1:1 atrioventricular conduction.

• Ectopic Atrial Tachycardia

  a disorder characterized by an electrocardiographic finding of atrial tachycardia that does not originate from the sinoatrial node.

• Grade 1 Paroxysmal Atrial Tachycardia, CTCAE|Grade 1 Paroxysmal atrial tachycardia

  asymptomatic, intervention not indicated

• Grade 2 Paroxysmal Atrial Tachycardia, CTCAE|Grade 2 Paroxysmal atrial tachycardia

  non-urgent medical intervention indicated

• Grade 3 Paroxysmal Atrial Tachycardia, CTCAE|Grade 3 Paroxysmal atrial tachycardia

  symptomatic, urgent intervention indicated; ablation

• Grade 4 Paroxysmal Atrial Tachycardia, CTCAE|Grade 4 Paroxysmal atrial tachycardia

  life-threatening consequences; incompletely controlled medically; cardioversion indicated

• Grade 5 Paroxysmal Atrial Tachycardia, CTCAE|Grade 5 Paroxysmal atrial tachycardia

  death

• Multifocal Atrial Tachycardia by ECG Finding|MULTIFOCAL ATRIAL TACHYCARDIA|Multifocal Atrial Tachycardia|Multifocal Atrial Tachycardia by EKG Finding|Multifocal atrial tachycardia

  an electrocardiographic finding of a supraventricular arrhythmia characterized by 3 or more distinct p wave morphologies with an isoelectric baseline, variable pr intervals and no predominant atrial rhythm. the ventricular rate is typically 100-150 beats per minute. (cdisc)

• Non-Sustained Atrial Tachycardia by ECG Finding|NON-SUSTAINED ATRIAL TACHYCARDIA|Non-Sustained Atrial Tachycardia|Non-Sustained Atrial Tachycardia|Non-Sustained Atrial Tachycardia by EKG Finding

  an electrocardiographic finding of an atrial tachycardia which terminates in less than 30 seconds. (cdisc)

• Paroxysmal Atrial Tachycardia, CTCAE|Paroxysmal Atrial Tachycardia|Paroxysmal atrial tachycardia

  a disorder characterized by a dysrhythmia with abrupt onset and sudden termination of atrial contractions with a rate of 150-250 beats per minute. the rhythm disturbance originates in the atria.

• Paroxysmal Atrial Tachycardia|PAT|Paroxysmal atrial tachycardia|True Paroxysmal Atrial Tachycardia

  a disorder characterized by an electrocardiographic finding of episodic atrial tachycardia with abrupt onset and termination.

• Sinus Node Dysfunction

  a derangement in the normal functioning of the sinoatrial node. typically, sa node dysfunction is manifest as sinoatrial exit block or sinus arrest, but may present as an absolute or relative bradycardia in the presence of a stressor. it may be associated with bradycardia-tachycardia syndrome

I45.89 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
308	CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH MCC	05	1.2022
309	CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC	05	0.7447
310	CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITHOUT CC/MCC	05	0.553

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert I45.89 to ICD-9-CM

• ICD-9-CM Code: 426.89 - Conduction disorder NEC

Patient Education

Arrhythmia

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

[Learn More in MedlinePlus]

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.