ICD-10 Diagnosis Code R00.0

Tachycardia, unspecified

Diagnosis Code R00.0

ICD-10: R00.0
Short Description: Tachycardia, unspecified
Long Description: Tachycardia, unspecified
This is the 2018 version of the ICD-10-CM diagnosis code R00.0

Valid for Submission
The code R00.0 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
      • Abnormalities of heart beat (R00)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Diagnostic Related Groups
The diagnosis code R00.0 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 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.

  • Abnormal pulse rate
  • Abnormal pulse rate
  • Disorder of pacing function
  • Irregular tachycardia
  • On examination - pulse borderline fast
  • On examination - pulse rate
  • On examination - pulse rate
  • On examination - pulse rate
  • On examination - pulse rate tachycardia
  • On examination - pulse rate very fast
  • Pacemaker re-entrant tachycardia
  • Pulse fast
  • Pulse fast
  • Reflex tachycardia
  • Sinoatrial node tachycardia
  • Sinus tachycardia
  • Tachyarrhythmia
  • Tachycardia
  • Tachycardia
  • Tachycardia
  • Tachycardia
  • Tachycardia-induced cardiomyopathy

Index of Diseases and Injuries
References found for the code R00.0 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 (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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