F51.0
Nonorganic insomnia
Coding guidance (WHO 2019)
A condition of unsatisfactory quantity and/or quality of sleep, which persists for a considerable period of time, including difficulty falling asleep, difficulty staying asleep, or early final wakening. Insomnia is a common symptom of many mental and physical disorders, and should be classified here in addition to the basic disorder only if it dominates the clinical picture. Excl.: insomnia (organic) (G47.0)