6A01.2

ICD-11 MMS 2026-01

Developmental language disorder

Description

Developmental language disorder is characterised by persistent deficits in the acquisition, understanding, production or use of language (spoken or signed), that arise during the developmental period, typically during early childhood, and cause significant limitations in the individual’s ability to communicate. The individual’s ability to understand, produce or use language is markedly below what would be expected given the individual’s age. The language deficits are not explained by another neurodevelopmental disorder or a sensory impairment or neurological condition, including the effects of brain injury or infection.

Index terms

  • Developmental language disorder
  • language development disorder
  • language learning impairment
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  • specific language impairment

Excludes

  • 08 – Diseases of the nervous system
  • 6A02 – Autism spectrum disorder
  • 6B06 – Selective mutism
  • AB52 – Deafness not otherwise specified

Exclusions from above levels

  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Child codes

  • 6A01.20 – Developmental language disorder with impairment of receptive and expressive language
  • 6A01.21 – Developmental language disorder with impairment of mainly expressive language
  • 6A01.22 – Developmental language disorder with impairment of mainly pragmatic language
  • 6A01.23 – Developmental language disorder, with other specified language impairment

Sibling codes

  • 6A01.0 – Developmental speech sound disorder
  • 6A01.1 – Developmental speech fluency disorder
  • 6A01.Y – Other specified developmental speech or language disorders
  • 6A01.Z – Developmental speech or language disorders, unspecified

Foundation entity

Developmental language disorder – http://id.who.int/icd/entity/862918022

Part of: 6A01: Developmental speech or language disorders › 06: Mental, behavioural or neurodevelopmental disorders