I01Header code — not billable

Rheumatic fever with heart involvement

Chapter
9. Diseases of the circulatory system
Category
I01
Effective date
October 1, 2026

Related codes in category I01

I01.0Acute rheumatic pericarditisYesI01.1Acute rheumatic endocarditisYesI01.2Acute rheumatic myocarditisYesI01.8Other acute rheumatic heart diseaseYesI01.9Acute rheumatic heart disease, unspecifiedYes

Frequently asked questions

What is ICD-10 code I01?

I01 is an ICD-10-CM diagnosis code for Rheumatic fever with heart involvement.

Is I01 a billable code?

No. I01 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 I01 in?

I01 falls under Chapter 9: Diseases of the circulatory system.

When did I01 become effective?

I01 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to I01?

I01 belongs to category I01, which includes 5 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.