6E60

ICD-11 MMS 2026-01

Secondary neurodevelopmental syndrome

Description

A syndrome that involves significant neurodevelopmental features that do not fulfill the diagnostic requirements of any of the specific neurodevelopmental disorders that is judged to be a direct pathophysiological consequence of a health condition not classified under mental and behavioural disorders (e.g., autistic-like features in Rett syndrome; aggression and self-mutilation in Lesch-Nyhan syndrome, abnormalities in language development in Williams syndrome), based on evidence from the history, physical examination, or laboratory findings. This category should be used in addition to the diagnosis for the presumed underlying disorder or disease when the neurodevelopmental problems are sufficiently severe to warrant specific clinical attention.

Excludes

  • 6A00 – Disorders of intellectual development
  • 6A02 – Autism spectrum disorder
  • 6A06 – Stereotyped movement disorder

Exclusions from above levels

  • 6C20 – Bodily distress disorder
  • MG30 – Chronic pain
  • MG31 – Acute pain
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  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Child codes

  • 6E60.0 – Secondary speech or language syndrome
  • 6E60.Y – Other specified secondary neurodevelopmental syndrome
  • 6E60.Z – Secondary neurodevelopmental syndrome, unspecified

Sibling codes

  • 6E61 – Secondary psychotic syndrome
  • 6E62 – Secondary mood syndrome
  • 6E63 – Secondary anxiety syndrome
  • 6E64 – Secondary obsessive-compulsive or related syndrome
  • 6E65 – Secondary dissociative syndrome
  • 6E66 – Secondary impulse control syndrome
  • 6E67 – Secondary neurocognitive syndrome
  • 6E68 – Secondary personality change
  • 6E69 – Secondary catatonia syndrome
  • 6E6Y – Other specified secondary mental or behavioural syndrome
  • 6E6Z – Secondary mental or behavioural syndrome, unspecified

Foundation entity

Secondary neurodevelopmental syndrome – http://id.who.int/icd/entity/255980141

Allowed postcoordination axes

Part of: 06: Mental, behavioural or neurodevelopmental disorders