2026 ICD-10-CM Diagnosis Code I47.11Inappropriate sinus tachycardia, so stated

ICD-10-CM Codes›I00–I99›I30-I5A›I47

ICD-10-CM I47.11
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I47.11 is a billable ICD-10-CM diagnosis code for inappropriate sinus tachycardia, so stated. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 308 through 310. Coders also document this condition as inappropriate sinus tachycardia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cardiac dysrhythmias.

Code Identity

ICD-10-CM Code
I47.11
Billable Status
Yes — Valid for Submission
Code Describes
Inappropriate sinus tachycardia, so stated
Short Description
Inappropriate sinus tachycardia, so stated
Same as the full description in the CMS dataset.
Parent Code
I47.1
Supraventricular tachycardia

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI30-I5AOther forms of heart disease
CategoryI47Paroxysmal tachycardia
This CodeI47.11Inappropriate sinus tachycardia, so stated

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Inappropriate sinus tachycardia

Tabular List NotesGuidance

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

Inclusion Terms

  • IST

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Inappropriate
      • sinus tachycardia, so stated (IST)
    • IST(inappropriate sinus tachycardia, so stated)
    • Tachycardia
      • sinus [sinusal] NOS
        • inappropriate, so stated (IST)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR017
Cardiac dysrhythmias
Default principal diagnosis: inpatient Yes · outpatient Yes

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 History & ChangesHistory

Replacement I47.11 replaces the following previously assigned code(s):

  • I47.1 - Supraventricular tachycardia
FY 2024AddedAdded to the ICD-10-CM code setEffective October 1, 2023.
FY 2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I47.11Overview

Is I47.11 (Supraventricular tachycardia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report inappropriate sinus tachycardia, so stated on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I47.11 group to?

When inappropriate sinus tachycardia, so stated is the principal diagnosis on an inpatient stay, it groups to MS-DRG 308, 309, 310, with relative weights from 0.5661 to 1.2040 depending on complications. Higher weights mean higher Medicare reimbursement.

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.