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Circadian rhythm sleep-wake disorders

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

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.

sections/codes in this section (7A60-7A6Z)

• Delayed sleep-wake phase disorder  (7A60)
• Advanced sleep-wake phase disorder  (7A61)
• Irregular sleep-wake rhythm disorder  (7A62)
• Non-24 hour sleep-wake rhythm disorder  (7A63)
• Circadian rhythm sleep-wake disorder, shift work type  (7A64)
• Circadian rhythm sleep-wake disorder, jet lag type  (7A65)
• Circadian rhythm sleep-wake disorders, unspecified  (7A6Z)

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