2026 ICD-10-CM Diagnosis Code I47Paroxysmal tachycardia

ICD-10-CM Codes›I00–I99›I30-I5A›I47

ICD-10-CM I47
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I47 is a non-billable ICD-10-CM category code for paroxysmal tachycardia, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I47.0, I47.10, I47.11, and I47.19.

This medical diagnosis code is frequently used in Cardiology medical specialties to designate conditions such abnormalities of heart rhythm.

Code Identity

ICD-10-CM Code
I47
Billable Status
No — Non-Billable Category
Code Describes
Paroxysmal tachycardia
Chapter
I30-I5A
Other forms of heart disease

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI30-I5AOther forms of heart disease
CategoryI47Paroxysmal tachycardia
This CodeI47Paroxysmal tachycardia

Specific Coding for Paroxysmal tachycardiaOverview

Non-specific codes like I47 require more characters. Use one of these billable codes instead:

  • Use I47.0 for Re-entry ventricular arrhythmia

  • I47.1 for Supraventricular tachycardia

  • Use I47.10 for Supraventricular tachycardia, unspecified

  • Use I47.11 for Inappropriate sinus tachycardia, so stated

  • Use I47.19 for Other supraventricular tachycardia

  • I47.2 for Ventricular tachycardia

  • Use I47.20 for Ventricular tachycardia, unspecified

  • Use I47.21 for Torsades de pointes

  • Use I47.29 for Other ventricular tachycardia

  • Use I47.9 for Paroxysmal tachycardia, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code First

  • tachycardia complicating:
  • abortion or ectopic or molar pregnancy O00 O07 O08.8
  • obstetric surgery and procedures O75.4

Type 1 Excludes

  • tachycardia NOS R00.0
  • sinoauricular tachycardia NOS R00.0
  • sinus sinusal tachycardia NOS R00.0

Patient EducationClinical

Arrhythmia

An arrhythmia is a problem with the rate or rhythm of your heartbeat. Your heart beats too quickly, too slowly, or with an irregular pattern. Changes in the electrical signals that control your heartbeat cause arrhythmias.

The full article covers:

  • What is an arrhythmia?
  • What causes an arrhythmia?
  • What are the symptoms of an arrhythmia?
  • How is an arrhythmia diagnosed?
  • What are the treatments for an arrhythmia?
  • Can arrhythmias be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I47Overview

Is I47 (Paroxysmal tachycardia) a billable code?

No. This is a category header that groups the codes for paroxysmal tachycardia, and headers cannot be submitted on claims. Claims for paroxysmal tachycardia need a more specific code from this category, such as I47.0, I47.10, and I47.11.