6E67ICD-11 MMS 2026-01
Secondary neurocognitive syndrome
Description
A syndrome that involves significant cognitive features that do not fulfill the diagnostic requirements of any of the specific neurocognitive disorders and are judged to be a direct pathophysiological consequence of a health condition or injury not classified under mental and behavioural disorders (e.g., cognitive changes due to a brain tumour), 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 cognitive symptoms are sufficiently severe to warrant specific clinical attention.
Index terms
- Secondary neurocognitive syndrome
- Neurocognitive syndrome due to health condition not classified under mental and behavioural disorders
Excludes
- http://id.who.int/icd/entity/1719545571 – Disorders with neurocognitive impairment as a major feature
Exclusions from above levels
Foundation children elsewhere
6D70– Delirium
Sibling codes
6E60– Secondary neurodevelopmental syndrome6E61– Secondary psychotic syndrome6E62– Secondary mood syndrome6E63– Secondary anxiety syndrome6E64– Secondary obsessive-compulsive or related syndrome6E65– Secondary dissociative syndrome6E66– Secondary impulse control syndrome6E68– Secondary personality change6E69– Secondary catatonia syndrome6E6Y– Other specified secondary mental or behavioural syndrome6E6Z– Secondary mental or behavioural syndrome, unspecified
Foundation entity
Secondary neurocognitive syndrome – http://id.who.int/icd/entity/235421675
Allowed postcoordination axes
Part of: 06: Mental, behavioural or neurodevelopmental disorders