
📋Overview
Chiari malformation is a structural defect in the cerebellum, where brain tissue extends into the spinal canal. It is a congenital condition, sometimes acquired, characterized by downward displacement of the cerebellar tonsils through the foramen magnum. The term encompasses several types, with Type I being the most common and often diagnosed in adolescence or adulthood. Modern terminology classifies Chiari malformations primarily by type rather than older eponyms.
Medical codes (for reference)
UMLS CUI: C0003803ICD-10-CM
Q07.0
MeSH
D001139
SNOMED CT (US)
253184003
Codes are provided for reference and interoperability. They are not a diagnosis.
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