ICD-11 code : 7A63;
Preferred Label : Non-24 hour sleep-wake rhythm disorder;
ICD-11 definition : Non-24 hour sleep-wake rhythm disorder is characterized by periods of insomnia and/or
daytime sleepiness, alternating with periods of relatively normal sleep, due to a
lack of entrainment of the circadian clock to the 24-hour environmental cycle. The
period length of the circadian/sleep-wake cycle may be shorter or, more typically,
longer than 24 hours. Symptoms occur as the circadian-controlled sleep-wake propensity
cycles in and out of phase with the environmental day-night cycle.;
ICD-11 synonym : Circadian rhythm sleep-wake disorder, non-entrained disorder type; Circadian rhythm sleep-wake disorder, non-24 hour type;
Origin ID : 312051047;
Currated CISMeF NLP mapping
- ICD-10 Mapping
Non-24 hour sleep-wake rhythm disorder is characterized by periods of insomnia and/or
daytime sleepiness, alternating with periods of relatively normal sleep, due to a
lack of entrainment of the circadian clock to the 24-hour environmental cycle. The
period length of the circadian/sleep-wake cycle may be shorter or, more typically,
longer than 24 hours. Symptoms occur as the circadian-controlled sleep-wake propensity
cycles in and out of phase with the environmental day-night cycle.
