ICD-11 MMS 2026-01
Ataxic disorders
Description
Disorders associated with ataxia. The word "ataxia" comes from a Greek word meaning "lack of order, indiscipline". People with ataxia have problems with coordination because parts of the nervous system that control movement and balance are affected. Ataxia may affect the fingers, hands, arms, legs, body, speech, and eye movements.
Exclusions from above levels
6A06 – Stereotyped movement disorder05 – Endocrine, nutritional or metabolic diseases18 – Complications of pregnancy, childbirth and the puerperium
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19 – Certain conditions originating in the perinatal period22 – Injury, poisoning or certain other consequences of external causes
Child codes
8A03.0 – Congenital ataxia8A03.1 – Hereditary ataxia8A03.2 – Non-hereditary degenerative ataxia8A03.3 – Acquired ataxia8A03.Y – Other specified ataxic disorders8A03.Z – Ataxic disorders, unspecified
Sibling codes
8A00 – Parkinsonism8A01 – Choreiform disorders8A02 – Dystonic disorders8A04 – Disorders associated with tremor8A05 – Tic disorders8A06 – Myoclonic disorders8A07 – Certain specified movement disorder8A0Y – Other specified movement disorders8A0Z – Movement disorders, unspecified
Part of: 08: Diseases of the nervous system
