F51.5 is the ICD-10 code for Nightmares. It is a four-character subcategory of F51 (Nonorganic sleep disorders), the most specific level in the WHO edition. It belongs to the block F50–F59 (Behavioural syndromes associated with physiological disturbances and physical factors) in Chapter V, Mental and behavioural disorders.
- Code type
- Subcategory (4 characters)
- Chapter
- V · F00–F99
- Classification
- WHO ICD-10, 2019 version
Definition
Dream experiences loaded with anxiety or fear. There is very detailed recall of the dream content. The dream experience is very vivid and usually includes themes involving threats to survival, security, or self-esteem. Quite often there is a recurrence of the same or similar frightening nightmare themes. During a typical episode there is a degree of autonomic discharge but no appreciable vocalization or body motility. Upon awakening the individual rapidly becomes alert and oriented.
What F51.5 includes
Conditions and terms that are coded here.
- Dream anxiety disorder
F51.5 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F51.5Mardrömmar
F51.5Mareritt
DF515Natlige mareridt
F51.5Painajaisunet
F51.5Albträume [Angstträume]
F51.5Cauchemars
F51.5nachtmerries
F51.5Nightmare disorder
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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