6E63

ICD-11 MMS 2026-01

Secondary anxiety syndrome

Description

A syndrome characterised by the presence of prominent anxiety symptoms judged to be a direct pathophysiological consequence of a health condition not classified under mental and behavioural disorders, based on evidence from the history, physical examination, or laboratory findings. The symptoms are not accounted for by delirium or by another mental and behavioural disorder, and are not a psychologically mediated response to a severe medical condition (e.g., anxiety symptoms or panic attacks in response to a life-threatening diagnosis). This category should be used in addition to the diagnosis for the presumed underlying disorder or disease when the anxiety symptoms are sufficiently severe to warrant specific clinical attention.

Index terms

  • Secondary anxiety syndrome
  • Organic anxiety disorder
  • anxiety disorder due to a general medical condition
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  • medical condition causing anxiety disorder
  • Anxiety syndrome due to health condition not classified under mental and behavioural disorders

Excludes

  • 6B43 – Adjustment disorder
  • 6D70 – Delirium

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

Sibling codes

  • 6E60 – Secondary neurodevelopmental syndrome
  • 6E61 – Secondary psychotic syndrome
  • 6E62 – Secondary mood 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 anxiety syndrome – http://id.who.int/icd/entity/2131412196

Allowed postcoordination axes

Part of: 06: Mental, behavioural or neurodevelopmental disorders