Delirium

Description

Delirium is characterized by a disturbance of attention, orientation, and awareness that develops within a short period of time, typically presenting as significant confusion or global neurocognitive impairment, with transient symptoms that may fluctuate depending on the underlying causal condition or etiology. Delirium often includes disturbance of behaviour and emotion, and may include impairment in multiple cognitive domains. A disturbance of the sleep-wake cycle, including reduced arousal of acute onset or total sleep loss with reversal of the sleep-wake cycle, may also be present. Delirium may be caused by the direct physiological effects of a medical condition not classified under mental, behavioural or neurodevelopmental disorders, by the direct physiological effects of a substance or medication, including withdrawal, or by multiple or unknown etiological factors.

Exclusions from above levels

http://id.who.int/icd/entity/1516623224 – Neurodevelopmental disorders
QE62 – Uncomplicated bereavement
QE84 – Acute stress reaction

Child codes

6D70.0 – Delirium due to disease classified elsewhere
6D70.1 – Delirium due to psychoactive substances including medications
6D70.2 – Delirium due to multiple etiological factors
6D70.Y – Delirium, other specified cause
6D70.Z – Delirium, unspecified or unknown cause

Sibling codes

6D71 – Mild neurocognitive disorder
6D72 – Amnestic disorder
6E0Y – Other specified neurocognitive disorders
6E0Z – Neurocognitive disorders, unspecified

Foundation entity

Delirium – http://id.who.int/icd/entity/897917531

Part of: 06: Mental, behavioural or neurodevelopmental disorders