I09.8Header code — not billable

Other specified rheumatic heart diseases

Chapter
9. Diseases of the circulatory system
Category
I09
Effective date
October 1, 2026

Related codes in category I09

I09Other rheumatic heart diseasesI09.0Rheumatic myocarditisYesI09.1Rheumatic diseases of endocardium, valve unspecifiedYesI09.2Chronic rheumatic pericarditisYesI09.81Rheumatic heart failureYesI09.89Other specified rheumatic heart diseasesYesI09.9Rheumatic heart disease, unspecifiedYes

Frequently asked questions

What is ICD-10 code I09.8?

I09.8 is an ICD-10-CM diagnosis code for Other specified rheumatic heart diseases.

Is I09.8 a billable code?

No. I09.8 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is I09.8 in?

I09.8 falls under Chapter 9: Diseases of the circulatory system.

When did I09.8 become effective?

I09.8 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to I09.8?

I09.8 belongs to category I09, which includes 7 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.