6A03.2

ICD-11 MMS 2026-01

Developmental learning disorder with impairment in mathematics

Description

Developmental learning disorder with impairment in mathematics is characterised by significant and persistent difficulties in learning academic skills related to mathematics or arithmetic, such as number sense, memorization of number facts, accurate calculation, fluent calculation, and accurate mathematic reasoning. The individual’s performance in mathematics or arithmetic is markedly below what would be expected for chronological or developmental age and level of intellectual functioning and results in significant impairment in the individual’s academic or occupational functioning. Developmental learning disorder with impairment in mathematics is not due to a disorder of intellectual development, sensory impairment (vision or hearing), a neurological disorder, lack of availability of education, lack of proficiency in the language of academic instruction, or psychosocial adversity.

Index terms

  • Developmental learning disorder with impairment in mathematics
  • Developmental acalculia
  • Specific learning disorder with impairment in mathematics
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  • arithmetical disorder
  • developmental arithmetic disorder
  • developmental arithmetical disturbance
  • developmental disorder of arithmetical skills
  • developmental dyscalculia
  • disorder of arithmetical skills
  • mathematics disorder
  • specific disorder of arithmetical skills

Excludes

  • 6A00 – Disorders of intellectual development

Exclusions from above levels

  • MB4B – Symbolic dysfunctions
  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Sibling codes

  • 6A03.0 – Developmental learning disorder with impairment in reading
  • 6A03.1 – Developmental learning disorder with impairment in written expression
  • 6A03.3 – Developmental learning disorder with other specified impairment of learning
  • 6A03.Z – Developmental learning disorder, unspecified

Foundation entity

Developmental learning disorder with impairment in mathematics – http://id.who.int/icd/entity/771231188

Part of: 6A03: Developmental learning disorder › 06: Mental, behavioural or neurodevelopmental disorders