U.S. ICD-10-CM · FY 2027

I00 ICD-10-CM Code: Rheumatic fever without heart involvement

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

I00

Rheumatic fever without heart involvement

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where I00 sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Acute rheumatic fever (I00-I02)

  3. 3

    Category I00

    Rheumatic fever without heart involvement

  4. 4

    Code I00

    Rheumatic fever without heart involvement

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for I00.

Code first

No “code first” instruction is listed for I00.

Use additional code

No “use additional code” instruction is listed for I00.

Excludes1

Conditions that should not be reported together with this code.

  • rheumatic fever with heart involvement (I01.0 -I01.9)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for I00.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code I00 mean?

I00 is the FY 2027 U.S. ICD-10-CM code for “Rheumatic fever without heart involvement.”

Is I00 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, I00 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is I00 located in ICD-10-CM?

I00 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Acute rheumatic fever (I00-I02) (I00–I02), under category I00, Rheumatic fever without heart involvement.

What coding notes are listed for I00?

No inclusion terms are listed for I00 in this reference record. No code-first instruction is listed. Excludes1 notes: rheumatic fever with heart involvement (I01.0 -I01.9). No Excludes2 note is listed.

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