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Non-24-hour sleep–wake disorder (non-24, [1] N24SWD, [2] or N24) is one of several chronic circadian rhythm sleep disorders (CRSDs). It is defined as a "chronic steady pattern comprising [...] daily delays in sleep onset and wake times in an individual living in a society". [3]
Irregular sleep–wake rhythm disorder (ISWRD) is a rare form of circadian rhythm sleep disorder. [2] [3] It is characterized by numerous naps throughout the 24-hour period, no main nighttime sleep episode, and irregularity from day to day. [4]
Circadian rhythm sleep-wake disorders, Advanced sleep phase type 307.45 G47.21 Circadian rhythm sleep-wake disorders, Delayed sleep phase type 307.45 G47.23 Circadian rhythm sleep-wake disorders, Irregular sleep-wake type 307.45 G47.24 Circadian rhythm sleep-wake disorders, Non-24-hour sleep-wake type 307.45 G47.26
Non-24-hour sleep–wake disorder (N24SWD): Most common in individuals that are blind and unable to detect light, is characterized by chronic patterns of sleep/wake cycles that are not entrained to the 24 h light–dark environmental cycle. As a result of this, individuals with this disorder will usually experience a gradual yet predictable ...
Circadian rhythm sleep disorder, advanced sleep phase type 327.32 G47.22 Circadian rhythm sleep disorder, irregular sleep-wake type 327.33 G47.23 Circadian rhythm sleep disorder, free-running (non-entrained) type 327.34 G47.24 Circadian rhythm sleep disorder, jet lag type 327.35 G47.25 Circadian rhythm sleep disorder, shift work type 327.36 G47.26
Generally, diseases outlined within the ICD-10 codes G47 within Chapter VI: Diseases of the nervous system should be included in this category. This category is for articles pertaining to sleep disorders and their treatment.
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Insufficient quality or quantity of night time sleep [5] Obstructive sleep apnea [6] Misalignments of the body's circadian pacemaker with the environment (e.g., jet lag, shift work, or other circadian rhythm sleep disorders) [7] Another underlying sleep disorder, such as narcolepsy, sleep apnea, [8] idiopathic hypersomnia, or restless legs syndrome