ICD-11 code : LA07.4;
Preferred Label : Arnold-Chiari malformation type I;
ICD-11 definition : A condition caused by failure of the cerebellum to correctly develop during the antenatal
period. This condition is characterized by extension of the cerebellar tonsils into
the foramen magnum, without involving the brain stem. This condition may present as
asymptomatic. Confirmation is through observation of the cerebellar tonsil extension
by imaging.;
ICD-11 synonym : Arnold-Chiari obstruction type I; Chiari malformation type I;
Origin ID : 1383121646;
Automatic exact mappings (from CISMeF team)
A condition caused by failure of the cerebellum to correctly develop during the antenatal
period. This condition is characterized by extension of the cerebellar tonsils into
the foramen magnum, without involving the brain stem. This condition may present as
asymptomatic. Confirmation is through observation of the cerebellar tonsil extension
by imaging.
