ICD-11 classes
06 Mental, behavioural or neurodevelopmental disorders
07 Sleep-wake disorders
Circadian rhythm sleep-wake disorders

ICD-11 Circadian rhythm sleep-wake disorders

Circadian rhythm sleep-wake disorders are disturbances of the sleep-wake cycle (typically manifest as insomnia, excessive sleepiness, or both) due to alterations of the circadian time-keeping system, its entrainment mechanisms, or a misalignment of the endogenous circadian rhythm and the external environment. Sleep logs and, if possible, actigraphy for a minimum of one week should be utilized to define the specific sleep-wake schedule disturbance.

The diagnosis excludes nothing.

Diagnosis contains 7 clarifying diagnoses:

1. 7A60 — Delayed sleep-wake phase disorder
2. 7A61 — Advanced sleep-wake phase disorder
3. 7A62 — Irregular sleep-wake rhythm disorder
4. 7A63 — Non-24 hour sleep-wake rhythm disorder
5. 7A64 — Circadian rhythm sleep-wake disorder, shift work type
6. 7A65 — Circadian rhythm sleep-wake disorder, jet lag type
7. 7A6Z — Circadian rhythm sleep-wake disorders, unspecified

The diagnosis is coded elsewhere:

• 07 Sleep-wake disorders #6512
• Circadian rhythm sleep-wake disorders #6556