2027 ICD-10-CM Diagnosis Code I02Rheumatic chorea

ICD-10-CM Codes›I00–I99›I00-I02›I02

ICD-10-CM I02
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I02 is a non-billable ICD-10-CM category code for rheumatic chorea, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I02.0 and I02.9.

Code Identity

ICD-10-CM Code
I02
Billable Status
No — Non-Billable Category
Code Describes
Rheumatic chorea
Short Description
Rheumatic chorea
Same as the full description in the CMS dataset.
Chapter
I00-I02
Acute rheumatic fever

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI00-I02Acute rheumatic fever
CategoryI02Rheumatic chorea
This CodeI02Rheumatic chorea

Specific Coding for Rheumatic choreaOverview

Non-specific codes like I02 require more characters. Use one of these billable codes instead:

  • Use I02.0 for Rheumatic chorea with heart involvement

  • Use I02.9 for Rheumatic chorea without heart involvement

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I02: its own notes plus those printed at Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • Sydenham's chorea

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • chorea NOS (G25.5)
  • Huntington's chorea (G10)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I02, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming I02: they are not reported together with it, unless the two conditions are unrelated.

Excludes2 1

These codes carry an Excludes2 note naming I02: its condition is not part of those codes, and both may be reported when the patient has both.

  • I51 Complications and ill-defined descriptions of heart disease
    heart disease specified as rheumatic (I00-I09) names I00-I09, which includes this code

Patient EducationClinical

Movement Disorders

Movement disorders are neurologic conditions that cause problems with movement, such as:

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I02Overview

What is the ICD-10 code for rheumatic chorea?

I02 is the ICD-10-CM category for rheumatic chorea, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is I02 (Rheumatic chorea) a billable code?

No. This is a category header that groups the codes for rheumatic chorea, and headers cannot be submitted on claims. Claims for rheumatic chorea need a more specific code from this category, such as I02.0 and I02.9.

Can I02 be reported with G25.5?

Not as a rule. The Excludes1 note on I02 lists "chorea NOS (G25.5)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).