LA22.3

ICD-11 MMS 2026-01

Structural developmental anomalies of ear ossicles

Description

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

Index terms

  • Structural developmental anomalies of ear ossicles
  • Malformations of ear ossicles
  • Ossicular malformations
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  • anomaly of ear ossicles
  • anomaly of ossicles
  • congenital abnormality of ear ossicles
  • congenital anomaly of ossicles of ear
  • congenital malformation of ear ossicles
  • deformity of auditory ossicles
  • deformity of ear ossicles, middle ear
  • Structural developmental anomalies of ear ossicles without defect of external ear
  • Malformations of ear ossicles without defect of external ear
  • Ossicular malformations without defect of external ear
  • Malleoincudal fixation
  • Incudostapedial dislocation
  • Stapes fixation
  • Structural developmental anomalies of ear ossicles with defect of external ear
  • Malformations of ear ossicles with defect of external ear
  • Ossicular malformations with defect of external ear
  • Hypoplasia, aplasia or malformation of the ossicular chain
  • Fusion defects of the ossicular chain
  • Congenital absence of incus
  • agenesis of incus
  • Congenital malposition of ear ossicles
  • congenital malposition of auditory ossicles
  • Congenital abnormal fusion of auditory ossicles
  • congenital fixation of auditory ossicles
  • congenital fused auditory ossicles
  • congenital fusion of ear ossicles
  • fusion of ear ossicles
  • Accessory auditory ossicles
  • extra auditory ossicles
  • supernumerary auditory ossicles
  • Persistent arteria stapedia

Exclusions from above levels

  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LA22.0 – Microtia
  • LA22.1 – Anotia
  • LA22.2 – Aplasia or hypoplasia of external auditory canal
  • LA22.4 – Structural developmental anomalies of inner ear
  • LA22.Y – Other specified structural developmental anomalies of ear causing hearing impairment
  • LA22.Z – Structural developmental anomalies of ear causing hearing impairment, unspecified

Foundation entity

Structural developmental anomalies of ear ossicles – http://id.who.int/icd/entity/238760163

Allowed postcoordination axes

Part of: LA22: Structural developmental anomalies of ear causing hearing impairment › 20: Developmental anomalies