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    v1.0.28
    OpenPayerBilling CodesOther forms of heart diseaseICD-10-CM i47-paroxysmal-tachycardia
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    ICD-10-CM Code For Paroxysmal Tachycardia: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I47 includes rapid heart rhythm disorders that begin and end abruptly, such as paroxysmal supraventricular tachycardia and paroxysmal ventricular tachycardia, covering conditions of abnormal cardiac conduction and rhythm. These ICD-10-CM diagnosis codes are used to document episodes of sudden-onset tachycardia, underlying arrhythmia type, and any associated complications or comorbid cardiac conditions. Accurate coding within the ICD-10-CM I47 group supports proper claim adjudication.

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    ICD-10-CM I47: Paroxysmal Tachycardia Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I47 covers paroxysmal tachycardias, a set of rapid heart rhythm disorders that begin and end abruptly. These diagnoses affect the heart’s electrical conduction system and can involve supraventricular or ventricular origins. Accurate coding matters for complete clinical documentation and can affect reimbursement and quality reporting.

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    When to Use

    Assign a code from this group when a patient has a documented episode of sudden-onset tachycardia and the clinician specifies the type or origin of the arrhythmia. Use these codes to reflect acute episodes, recurring paroxysms, and any documented complications or concurrent cardiac conditions.

    ICD-10-CM Codes

    8 rows

    ICD-10-CM CodeDescription
    I47.0Re-entry ventricular arrhythmia
    I47.10Supraventricular tachycardia, unspecified
    I47.11Inappropriate sinus tachycardia, so stated
    I47.19Other supraventricular tachycardia
    I47.20Ventricular tachycardia, unspecified
    I47.21Torsades de pointes
    I47.29Other ventricular tachycardia
    I47.9Paroxysmal tachycardia, unspecified

    DRG Codes

    5 rows

    DRG CodeDescription
    308Cardiac Arrhythmia and Conduction Disorders with MCC
    309Cardiac Arrhythmia and Conduction Disorders with CC
    310Cardiac Arrhythmia and Conduction Disorders without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An adult in their 60s presents to the emergency department with sudden-onset palpitations, lightheadedness, and near-syncope that began an hour earlier. ECG in triage shows a regular narrow-complex tachycardia at 180 bpm that terminates after IV adenosine and rate control; the diagnosis is an acute paroxysmal supraventricular tachycardia episode prompting ED treatment and observation. Typical codes: I47.1, I47.11
    • A middle-aged patient with a known history of Wolff–Parkinson–White physiology visits the cardiology clinic for recurrent intermittent palpitations and documented episodes of atrioventricular reentrant tachycardia on ambulatory monitoring over several months. This represents a chronic, recurrent paroxysmal tachyarrhythmia being managed electively with antiarrhythmic medication adjustment or consideration of ablation. Typical codes: I47.1, I47.10
    • An older inpatient with acute myocardial infarction develops a new, sustained wide-complex tachycardia during hospitalization associated with hemodynamic instability; the team treats it as a ventricular tachycardia complicating the primary cardiac event. Because the arrhythmia is a paroxysmal tachycardia occurring as a complication/comorbidity in the setting of acute ischemia, coding reflects ventricular paroxysmal tachycardia. Typical codes: I47.2, I47.20

    Related Codes

    I30-ACUTE-PERICARDITIS

    ICD-10-CM Code For Acute Pericarditis: Group Overview

    I31-OTHER-DISEASES-OF-PERICARDIUM

    ICD-10-CM Code For Other Diseases Of Pericardium: Group Overview

    I32-PERICARDITIS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Pericarditis In Diseases Classified Elsewhere: Group Overview

    I33-ACUTE-AND-SUBACUTE-ENDOCARDITIS

    ICD-10-CM Code For Acute And Subacute Endocarditis: Group Overview

    I34-NONRHEUMATIC-MITRAL-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Mitral Valve Disorders: Group Overview

    I35-NONRHEUMATIC-AORTIC-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Aortic Valve Disorders: Group Overview

    I36-NONRHEUMATIC-TRICUSPID-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Tricuspid Valve Disorders: Group Overview

    I37-NONRHEUMATIC-PULMONARY-VALVE-DISORDERS

    ICD-10-CM Code For Nonrheumatic Pulmonary Valve Disorders: Group Overview

    I38-ENDOCARDITIS-VALVE-UNSPECIFIED

    ICD-10-CM Code For Endocarditis Valve Unspecified: Group Overview

    I39-ENDOCARDITIS-AND-HEART-VALVE-DISORDERS

    ICD-10-CM Code For Endocarditis And Heart Valve Disorders In Diseases Classified Elsewhere: Group Overview

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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