LB9A

ICD-11 MMS 2026-01

Reduction defects of lower limb

Description

Any condition caused by the failure of a lower limb to correctly develop during the antenatal period. These conditions are characterised by reduction in size or absence of the limb.

Exclusions from above levels

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

Child codes

  • LB9A.0 – Amelia of lower limb
  • LB9A.1 – Tibial hemimelia
  • LB9A.2 – Fibular hemimelia
  • LB9A.3 – Congenital absence of thigh or lower leg with foot present
  • LB9A.4 – Apodia
  • LB9A.5 – Adactyly of feet
  • LB9A.6 – Split foot
  • LB9A.7 – Congenital absence of both lower leg and foot
  • LB9A.8 – Femoral agenesis or hypoplasia
  • LB9A.Y – Other specified reduction defects of lower limb
  • LB9A.Z – Reduction defects of lower limb, unspecified

Sibling codes

  • LB70 – Structural developmental anomalies of cranium
  • LB71 – Structural developmental anomalies of facial bones
  • LB72 – Structural developmental anomalies of shoulder girdle
  • LB73 – Structural developmental anomalies of spine or bony thorax
  • LB74 – Structural developmental anomalies of pelvic girdle
  • LB75 – Brachydactyly
  • LB76 – Triphalangeal thumb
  • LB77 – Hyperphalangy
  • LB78 – Polydactyly
  • LB79 – Syndactyly
  • LB90 – Joint formation defects
  • LB91 – Congenital shoulder dislocation
  • LB92 – Congenital elbow dislocation
  • LB93 – Congenital knee dislocation
  • LB94 – Congenital patella dislocation
  • LB95 – Patella aplasia or hypoplasia
  • LB96 – Congenital bowing of long bones
  • LB97 – Limb overgrowth
  • LB98 – Congenital deformities of feet
  • LB99 – Reduction defects of upper limb
  • LB9B – Reduction defects of upper and lower limbs
  • LB9Y – Other specified structural developmental anomalies of the skeleton
  • LB9Z – Structural developmental anomalies of the skeleton, unspecified

Foundation entity

Reduction defects of lower limb – http://id.who.int/icd/entity/1989891499

Allowed postcoordination axes

Part of: 20: Developmental anomalies