ICD-11 classes
07 Sleep-wake disorders
Hypersomnolence disorders
7A20 — Narcolepsy
7A20.0 — Narcolepsy, Type 1

ICD-11 7A20.0 — Narcolepsy, Type 1

Type 1 narcolepsy is a disorder of excessive sleepiness due to a deficiency of hypothalamic hypocretin (orexin) signaling. In addition to daily periods of irrepressible need to sleep or daytime lapses into sleep, type 1 narcolepsy is characterised by symptoms of REM sleep dissociation, most importantly cataplexy. Cataplexy is a sudden and uncontrollable loss of muscle tone arising during wakefulness that is typically triggered by a strong emotion, such as excitement or laughter. Although cataplexy is a pathognomonic symptom of type 1 narcolepsy, it may not manifest until years following onset of the sleepiness. In such cases, a diagnosis of narcolepsy, type 1 may be made based on cerebrospinal fluid (CSF)-hypocretin levels

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.

The diagnosis is coded elsewhere:

Search results