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ICD11

Sleep–wake disorders (G47)

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Sleep–wake disorders is a chapter in ICD-11 that includes conditions characterized by disturbances in the timing, quality, or amount of sleep and wakefulness. These disorders affect the normal sleep–wake cycle and can lead to excessive daytime sleepiness, difficulty initiating or maintaining sleep, abnormal behaviors during sleep, or misalignment between internal biological rhythms and external environmental demands.

This chapter covers a range of sleep-related conditions such as insomnia disorders, hypersomnolence disorders, sleep-related breathing disorders, circadian rhythm sleep–wake disorders, and parasomnias. Accurate classification of sleep–wake disorders supports appropriate clinical evaluation, targeted treatment, and ongoing management, while also contributing to research, public health awareness, and the understanding of sleep’s role in overall physical and mental health.

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Frequently asked questions

This chapter includes disorders affecting sleep duration, quality, timing, and sleep-related behaviors.

It includes insomnia, hypersomnolence, sleep apnea, parasomnias, and circadian rhythm disorders.

They are recognized as distinct clinical conditions rather than symptoms of other disorders.

The classification reflects current diagnostic and clinical standards in sleep medicine.

They may coexist but are classified independently to ensure accurate diagnosis and treatment.

It supports appropriate treatment, research, and recognition of sleep health as a public health issue.

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