ICD-11

Any condition caused by failure of the spine or bony thorax to correctly develop during the antenatal period.

Any condition caused by failure of the spine to correctly develop during the antenatal period.

A condition caused by bony or ligamentous abnormality of the upper spinal column. This condition is characterised by excessive movement at the junction between C1 and C2 vertebrae. This condition may present with impaired rotation of the neck, neurological difficulties, or may be asymptomatic.