LB90.0

ICD-11 MMS 2026-01

Humero-radio-ulnar synostosis

Description

A condition caused by failure of the arm bones to correctly develop during the antenatal period. This condition is characterised by direct fusion of the humerus to the ulnar and radial bones of the arm, and consequent inability to straighten the elbow joint. This condition may be associated with thalidomide embryopathy. Confirmation is through observation of humero-radio-ulnar fusion by imaging.

Index terms

  • Humero-radio-ulnar synostosis
  • Humero-radio-ulnar synostosis, unilateral
  • Humero-radio-ulnar synostosis, bilateral

Exclusions from above levels

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

Sibling codes

  • LB90.1 – Humero-radial synostosis
  • LB90.2 – Humero-ulnar synostosis
  • LB90.3 – Radio-ulnar synostosis
  • LB90.4 – Madelung deformity
  • LB90.5 – Congenital digital clubbing
  • LB90.6 – Tibio-fibular synostosis
  • LB90.7 – Cubitus valgus
  • LB90.8 – Cubitus varus
  • LB90.Y – Other specified joint formation defects
  • LB90.Z – Joint formation defects, unspecified

Foundation entity

Humero-radio-ulnar synostosis – http://id.who.int/icd/entity/1798339866

Allowed postcoordination axes

Part of: LB90: Joint formation defects › 20: Developmental anomalies