ICD-11 classes
20 Developmental anomalies
Structural developmental anomalies primarily affecting one...
Structural developmental anomalies of the skeleton
LB73 — Structural developmental anomalies of spine or bony thorax
LB73.2 — Structural developmental anomalies of spine
LB73.22 — Atlanto-axial instability or subluxation
ICD-11 LB73.22 — Atlanto-axial instability or subluxation
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.
The diagnosis includes nothing.
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: