2021 ICD-10-CM Diagnosis Code I02

Rheumatic chorea

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • I02 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM I02 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of I02 - other international versions of ICD-10 I02 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I02. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • chorea NOS (
    ICD-10-CM Diagnosis Code G25.5

    Other chorea

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Chorea NOS
    Type 1 Excludes
    • chorea NOS with heart involvement (I02.0)
    • Huntington's chorea (G10)
    • rheumatic chorea (I02.-)
    • Sydenham's chorea (I02.-)
    G25.5
    )
  • Huntington's chorea (
    ICD-10-CM Diagnosis Code G10

    Huntington's disease

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Huntington's chorea
    • Huntington's dementia
    Code Also
    • dementia in other diseases classified elsewhere without behavioral disturbance (F02.80)
    G10
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • Sydenham's chorea
The following code(s) above I02 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I02:
  • I00-I99
    2021 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • 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.-)
    Diseases of the circulatory system
Clinical Information
  • Acute, usually self-limited disorder of early life, usually between ages 5 and 15, or during pregnancy, and closely linked with rheumatic fever; characterized by involuntary movements that gradually become severe, affecting all motor activities including gait, arm movements, and speech; called also sydenham's, acute, juvenile, or simple chorea, or st. Vitus dance.
  • What: chorea. Chorea (sydenham's): a neurological disorder characterized by purposeless, rapid, involuntary movements, emotional lability, and muscular weakness. Why: sydenham's chorea is seen in rheumatic fever. The chorea may be associated with other rheumatic manifestations or it may present as the sole expression of rheumatic fever. How: typically, the onset of chorea is gradual, with irritability, uncooperativeness, fits of anger, crying, and inappropriate behavior present before the choreiform movements are noted. The movements are rapid and jerky, unlike the slower, rhythmic motion seen in athetosis. Characteristically, on raising his arms above the head, the patient turns the arms so as to oppose the backs of the hands. The patient is unable to sustain a tetanic muscular contraction. On squeezing an examiner's hand the patient can only provide a repetitive, spasmodic grip which is overly pronated and is similar to the motion of milking a cow (milk-maid's grip). The patient's facial expression alternates between frowning, grinning and grimacing. His tongue darts in and out of his mouth. His speech is slurred and vacillates between a halting and an explosive rhythm. The deep tendon reflexes tend to be pendular, i.e., when the knee jerk is elicited with the patient sitting, the leg swings back and forth four or five times like a pendulum, rather than one or two times as in a normal person. Chorea is most common prior to puberty, and in females. It is occasionally seen in adult women but never in adult men. Refs: 1) jones criteria (revised) for guidance in the diagnosis of rheumatic fever. Circulation 32:664, 1965. 2) cooper, is: involuntary movement disorders. New york: hoeber, 1969.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to I02:
  • Type 1 Excludes: G25.5
    , G25.5
    ICD-10-CM Diagnosis Code G25.5

    Other chorea

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Chorea NOS
    Type 1 Excludes
    • chorea NOS with heart involvement (I02.0)
    • Huntington's chorea (G10)
    • rheumatic chorea (I02.-)
    • Sydenham's chorea (I02.-)
    ICD-10-CM Diagnosis Code G25.5

    Other chorea

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Chorea NOS
    Type 1 Excludes
    • chorea NOS with heart involvement (I02.0)
    • Huntington's chorea (G10)
    • rheumatic chorea (I02.-)
    • Sydenham's chorea (I02.-)
ICD-10-CM Codes Adjacent To I02
H95.819 Postprocedural stenosis of unspecified external ear canal
H95.88 Other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified
H95.89 Other postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified
I00 Rheumatic fever without heart involvement
I01 Rheumatic fever with heart involvement
I01.0 Acute rheumatic pericarditis
I01.1 Acute rheumatic endocarditis
I01.2 Acute rheumatic myocarditis
I01.8 Other acute rheumatic heart disease
I01.9 Acute rheumatic heart disease, unspecified
I02 Rheumatic chorea
I02.0 Rheumatic chorea with heart involvement
I02.9 Rheumatic chorea without heart involvement
I05 Rheumatic mitral valve diseases
I05.0 Rheumatic mitral stenosis
I05.1 Rheumatic mitral insufficiency
I05.2 Rheumatic mitral stenosis with insufficiency
I05.8 Other rheumatic mitral valve diseases
I05.9 Rheumatic mitral valve disease, unspecified
I06 Rheumatic aortic valve diseases
I06.0 Rheumatic aortic stenosis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.