2024 ICD-10-CM Diagnosis Code R00.0

Tachycardia, unspecified

ICD-10-CM Code:
R00.0
ICD-10 Code for:
Tachycardia, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

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)

R00.0 is a billable diagnosis code used to specify a medical diagnosis of tachycardia, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

The code is commonly used in cardiology medical specialties to specify clinical concepts such as abnormalities of heart rhythm.

Unspecified diagnosis codes like R00.0 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

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.

Approximate Synonyms

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

  • Abnormal pulse rate
  • Borderline fast pulse
  • Cardiac pacemaker re-entrant tachycardia
  • Finding of pulse rate
  • Irregular tachycardia
  • Pacemaker mediated tachycardia
  • Pulse fast
  • QRS complex - finding
  • Reflex tachycardia
  • Regular wide QRS complex tachycardia
  • Sinoatrial node tachycardia
  • Sinus tachycardia
  • Tachyarrhythmia
  • Tachycardia
  • Tachycardia-induced cardiomyopathy
  • Wide QRS complex

Clinical Classification

Clinical Information

  • Postural Orthostatic Tachycardia Syndrome

    a syndrome of orthostatic intolerance combined with excessive upright tachycardia, and usually without associated orthostatic hypotension. all variants have in common an excessively reduced venous return to the heart (central hypovolemia) while upright.
  • Tachycardia

    abnormally rapid heartbeat, usually with a heart rate above 100 beats per minute for adults. tachycardia accompanied by disturbance in the cardiac depolarization (cardiac arrhythmia) is called tachyarrhythmia.
  • Tachycardia, Atrioventricular Nodal Reentry

    abnormally rapid heartbeats caused by reentry of atrial impulse into the dual (fast and slow) pathways of atrioventricular node. the common type involves a blocked atrial impulse in the slow pathway which reenters the fast pathway in a retrograde direction and simultaneously conducts to the atria and the ventricles leading to rapid heart rate of 150-250 beats per minute.
  • Tachycardia, Ectopic Atrial

    abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the heart atrium but away from the sinoatrial node. unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. the episode is characterized by a heart rate between 135 to less than 200 beats per minute and lasting 30 seconds or longer.
  • Tachycardia, Ectopic Junctional

    a rare form of supraventricular tachycardia caused by automatic, not reentrant, conduction initiated from sites at the atrioventricular junction, but not the atrioventricular node. it usually occurs during myocardial infarction, after heart surgery, or in digitalis intoxication with a heart rate ranging from 140 to 250 beats per minute.
  • Tachycardia, Paroxysmal

    abnormally rapid heartbeats with sudden onset and cessation.
  • Tachycardia, Reciprocating

    abnormally rapid heartbeats caused by reentrant conduction over the accessory pathways between the heart atria and the heart ventricles. the impulse can also travel in the reverse direction, as in some cases, atrial impulses travel to the ventricles over the accessory pathways and back to the atria over the bundle of his and the atrioventricular node.
  • Tachycardia, Sinoatrial Nodal Reentry

    abnormally rapid heartbeats caused by reentry circuit in or around the sinoatrial node. it is characterized by sudden onset and offset episodes of tachycardia with a heart rate of 100-150 beats per minute. the p wave is identical to the sinus p wave but with a longer pr interval.
  • Tachycardia, Sinus

    simple rapid heartbeats caused by rapid discharge of impulses from the sinoatrial node, usually between 100 and 180 beats/min in adults. it is characterized by a gradual onset and termination. sinus tachycardia is common in infants, young children, and adults during strenuous physical activities.
  • Tachycardia, Supraventricular

    a generic expression for any tachycardia that originates above the bundle of his.
  • Tachycardia, Ventricular

    an abnormally rapid ventricular rhythm usually in excess of 150 beats per minute. it is generated within the ventricle below the bundle of his, either as autonomic impulse formation or reentrant impulse conduction. depending on the etiology, onset of ventricular tachycardia can be paroxysmal (sudden) or nonparoxysmal, its wide qrs complexes can be uniform or polymorphic, and the ventricular beating may be independent of the atrial beating (av dissociation).
  • Heart Rate

    the number of times the heart ventricles contract per unit of time, usually per minute.
  • Sinoatrial Node

    the small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (vena cava, superior) and right atrium. contraction impulses probably start in this node, spread over the atrium (heart atrium) and are then transmitted by the atrioventricular bundle (bundle of his) to the ventricle (heart ventricle).
  • Bundle of His

    small band of specialized cardiac muscle fibers that originates in the atrioventricular node and extends into the membranous part of the interventricular septum. the bundle of his, consisting of the left and the right bundle branches, conducts the electrical impulses to the heart ventricles in generation of myocardial contraction.
  • Fetal Tachyarrhythmia

    an abnormality in the fetal heart rhythm associated with an increase in fetal heart rate above 160 beats per minute.
  • Grade 1 Neonatal Tachyarrhythmia, AE|Grade 1 Neonatal Tachyarrhythmia|Grade 1 Neonatal Tachyarrhythmia, Adverse Event

    an adverse event in a newborn characterized by brief, self-limiting, episodes of asymptomatic tachyarrhythmia (e.g. extra-systolic beats); no care changes.
  • Grade 2 Neonatal Tachyarrhythmia, AE|Grade 2 Neonatal Tachyarrhythmia|Grade 2 Neonatal Tachyarrhythmia, Adverse Event

    a tachyarrhythmia adverse event in a newborn characterized by no change in age-appropriate behavior; requiring minor care changes (e.g. increased monitoring).
  • Grade 3 Neonatal Tachyarrhythmia, AE|Grade 3 Neonatal Tachyarrhythmia|Grade 3 Neonatal Tachyarrhythmia, Adverse Event

    a tachyarrhythmia adverse event in a newborn resulting in non-life threatening hemodynamic compromise or changes in age-appropriate behavior; requiring major care changes (e.g. new medication or intervention).
  • Grade 4 Neonatal Tachyarrhythmia, AE|Grade 4 Neonatal Tachyarrhythmia|Grade 4 Neonatal Tachyarrhythmia, Adverse Event

    a tachyarrhythmia adverse event in a newborn characterized by life-threatening consequences (e.g. shock); requiring urgent major care changes.
  • Grade 5 Neonatal Tachyarrhythmia, AE|Grade 5 Neonatal Tachyarrhythmia|Grade 5 Neonatal Tachyarrhythmia, Adverse Event

    a tachyarrhythmia adverse event in a newborn which results in death.
  • Neonatal Tachyarrhythmia, AE|Neonatal Tachyarrhythmia|Neonatal Tachyarrhythmia, Adverse Event|Neonatal tachyarrhythmia

    an adverse event in a newborn characterized by non-sinus rhythm with an abnormally high heart rate for age.
  • Supraventricular Tachyarrhythmia ECG Assessment|SPRTARRY|SPRTARRY|Supraventricular Tachyarrhythmias|Supraventricular Tachyarrhythmias|Supraventricular Tachyarrhythmias

    an electrocardiographic assessment of the abnormally fast cardiac rhythms originating above the ventricles.
  • Supraventricular Tachyarrhythmia Other than Atrial Fibrillation or Atrial Flutter Associated with Post-Acute Sequelae of SARS-CoV-2 Infection|PASC Supraventricular Tachyarrhythmia Other than Atrial Fibrillation or Atrial Flutter|PASC supraventricular tachyarrhythmia other than AF or atrial flutter|Post-Acute Sequelae of COVID-19 Supraventricular Tachyarrhythmia Other than Atrial Fibrillation or Atrial Flutter

    supraventricular tachycardia other than atrial fibrillation or atrial flutter in a patient without prior history of atrial tachyarrhythmias that started during probable or confirmed acute covid-19 and persisted beyond four weeks after the initial diagnosis of covid-19.
  • Sustained Atrial Tachyarrhythmia Related to COVID-19 other than Atrial Fibrillation or Atrial Flutter|Sustained atrial tachyarrhythmia other than AF or atrial flutter

    a supraventricular tachycardia, including av nodal re-entry, orthodromic re-entrant tachycardia, multifocal atrial tachycardia, other atrial tachycardia that lasts more then 30 seconds in a patient with probable or confirmed acute covid-19.
  • Tachyarrhythmia

    a disorder characterized by an arrhythmia with an above normal rate.
  • Ventricular Tachyarrhythmia ECG Assessment|VTTARRY|VTTARRY|Ventricular Tachyarrhythmias|Ventricular Tachyarrhythmias|Ventricular Tachyarrhythmias

    an electrocardiographic assessment of the abnormally fast cardiac rhythms originating within the ventricles.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


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.
  • Rapid heart beat
  • Sinoauricular tachycardia NOS
  • Sinus sinusal tachycardia NOS

Type 1 Excludes

Type 1 Excludes
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.
  • inappropriate sinus tachycardia, so stated I47.11
  • neonatal tachycardia P29.11
  • paroxysmal tachycardia I47

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert R00.0 to ICD-9-CM

  • ICD-9-CM Code: 785.0 - Tachycardia NOS

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.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.