ICD-9 Code 427.89

Other specified cardiac dysrhythmias

Not Valid for Submission

427.89 is a legacy non-billable code used to specify a medical diagnosis of other specified cardiac dysrhythmias. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 427.89
Short Description:Cardiac dysrhythmias NEC
Long Description:Other specified cardiac dysrhythmias

Convert 427.89 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • I49.8 - Other specified cardiac arrhythmias
  • R00.1 - Bradycardia, unspecified

Code Classification

  • Diseases of the circulatory system (390–459)
    • Other forms of heart disease (420-429)
      • 427 Cardiac dysrhythmias

Information for Medical Professionals


  • Abnormal femoral pulse
  • Abnormal pulse rate
  • Abnormal radial pulse
  • Accelerated idioventricular rhythm
  • Anadicrotic pulse
  • Apex beat displaced - left ventricle hypertrophy
  • Apex beat displaced - right ventricle hypertrophy
  • Atrial bigeminy
  • Atrial tachycardia
  • Atrial trigeminy
  • Atrioventricular junctional
  • Atrioventricular junctional rhythm
  • Atrio-ventricular node arrhythmia
  • Atrioventricular tachycardia
  • Atrio-ventricular-junctional
  • Baseline bradycardia
  • Bigeminal pulse
  • Bradyarrhythmia
  • Bradycardia
  • Cardiac channelopathy
  • Chronic ectopic atrial tachycardia
  • Dicrotic pulse
  • Drug-induced bradycardia
  • Ectopic atrial beats
  • Ectopic beats
  • Fourth sound gallop
  • Fusion beats
  • Gallop rhythm
  • His bundle tachycardia
  • Idiojunctional tachycardia
  • Idioventricular rhythm
  • Inappropriate sinus tachycardia
  • Incessant atrial tachycardia
  • Incisional tachycardia
  • Labile pulse
  • Left atrial incisional tachycardia
  • Left atrial rhythm
  • Marked sinus arrhythmia
  • Moderate hypokinesis of cardiac wall
  • Multifocal atrial tachycardia
  • Nodal rhythm disorder
  • On examination - pulse rate - bradycardia
  • P wave left axis deviation
  • Plateau pulse
  • Postoperative His bundle tachycardia
  • Postoperative sinoatrial disease
  • Pulse deficit
  • Pulse irregular
  • Pulse irregularly irregular
  • Pulse missed beats
  • Pulse regularly irregular
  • Pulsus trigeminus
  • Re-entrant atrial tachycardia
  • Re-entrant atrioventricular node tachycardia
  • Re-entrant atrioventricular tachycardia
  • Right atrial incisional tachycardia
  • Sinoatrial nodal reentrant tachycardia
  • Sinus arrest with ventricular escape
  • Sinus tachycardia
  • Summation gallop
  • Supraventricular tachycardia
  • Symptomatic sinus bradycardia
  • Vagal autonomic bradycardia
  • Vagal autonomic bradycardia of prematurity
  • Ventricular bigeminy
  • Ventricular trigeminy
  • Wandering atrial pacemaker
  • Wandering pacemaker
  • Withdrawal arrhythmia

Index to Diseases and Injuries

References found for the code 427.89 in the Index of Diseases and Injuries:

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
  • Atrial fibrillation or flutter
  • Cardiac ablation procedures
  • Cardioversion
  • Ectopic heartbeat
  • Electrocardiogram
  • Exercise stress test
  • Heart block
  • Heart palpitations
  • His bundle electrography
  • Holter monitor (24h)
  • Intracardiac electrophysiology study (EPS)
  • Multifocal atrial tachycardia
  • Paroxysmal supraventricular tachycardia (PSVT)
  • Sick sinus syndrome
  • Ventricular fibrillation
  • Ventricular tachycardia
  • Wolff-Parkinson-White syndrome

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ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. 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.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.