2026 ICD-10-CM Diagnosis Code I09Other rheumatic heart diseases

ICD-10-CM Codes›I00–I99›I05-I09›I09

ICD-10-CM I09
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I09 is a non-billable ICD-10-CM category code for other rheumatic heart diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I09.0, I09.1, I09.2, and I09.81.

Code Identity

ICD-10-CM Code
I09
Billable Status
No — Non-Billable Category
Code Describes
Other rheumatic heart diseases
Chapter
I05-I09
Chronic rheumatic heart diseases

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI05-I09Chronic rheumatic heart diseases
CategoryI09Other rheumatic heart diseases
This CodeI09Other rheumatic heart diseases

Specific Coding for Other rheumatic heart diseasesOverview

Non-specific codes like I09 require more characters. Use one of these billable codes instead:

  • Use I09.0 for Rheumatic myocarditis

  • Use I09.1 for Rheumatic diseases of endocardium, valve unspecified

  • Use I09.2 for Chronic rheumatic pericarditis

  • I09.8 for Other specified rheumatic heart diseases

  • Use I09.81 for Rheumatic heart failure

  • Use I09.89 for Other specified rheumatic heart diseases

  • Use I09.9 for Rheumatic heart disease, unspecified

Patient EducationClinical

Heart Valve Diseases

Heart valve disease happens when one or more of your heart valves don't work well.

The full article covers:

  • What are heart valve diseases?
  • What are the types of heart valve diseases?
  • What causes heart valve diseases?
  • Who is more likely to develop heart valve diseases?
  • What are the symptoms of heart valve diseases?
  • What other problems can heart valve diseases cause?
  • How is heart valve disease diagnosed?
  • What are the treatments for heart valve diseases?

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 I09Overview

Is I09 (Other rheumatic heart diseases) a billable code?

No. This is a category header that groups the codes for other rheumatic heart diseases, and headers cannot be submitted on claims. Claims for other rheumatic heart diseases need a more specific code from this category, such as I09.0, I09.1, and I09.2.