2027 ICD-10-CM Diagnosis Code I47Paroxysmal tachycardia

ICD-10-CM Codes›I00–I99›I30-I5A›I47

ICD-10-CM I47
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Paroxysmal tachycardia
Same as the full description in the CMS dataset.
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 I47.22 for Catecholaminergic polymorphic ventricular tachycardia [CPVT]

  • Use I47.29 for Other ventricular tachycardia

  • Use I47.9 for Paroxysmal tachycardia, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I47: its own notes plus those printed at Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • tachycardia NOS (R00.0)
  • sinoauricular tachycardia NOS (R00.0)
  • sinus [sinusal] tachycardia NOS (R00.0)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Code First

The underlying condition named in the note is sequenced before this code.

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

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I47, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming I47: they are not reported together with it, unless the two conditions are unrelated.

  • R00.0 Tachycardia, unspecified
    paroxysmal tachycardia (I47.-)

Excludes2 1

These codes carry an Excludes2 note naming I47: its condition is not part of those codes, and both may be reported when the patient has both.

  • R00 Abnormalities of heart beat
    specified arrhythmias (I47-I49)

Code First 1

These codes say to code first a condition named in the note, and I47 is one of the conditions named.

  • I5A Non-ischemic myocardial injury (non-traumatic)
    paroxysmal tachycardia (I47.-)

Code Also 1

These codes say I47 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • M35.81 Multisystem inflammatory syndrome
    cardiac arrhythmia (I47-I49.-)

Clinical InformationClinical

  • Tachycardia, Paroxysmal

    abnormally rapid heartbeats with sudden onset and cessation.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I47Overview

What is the ICD-10 code for paroxysmal tachycardia?

I47 is the ICD-10-CM category for paroxysmal tachycardia, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can I47 be reported with R00.0?

Not as a rule. The Excludes1 note on I47 lists "tachycardia NOS (R00.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is coded first with I47?

The Code First note reads: tachycardia complicating: abortion or ectopic or molar pregnancy (O00-O07, O08.8); obstetric surgery and procedures (O75.4). When one of these applies, it is sequenced before I47.