F51.8 is the ICD-10 code for Other nonorganic sleep disorders. 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
F51.8 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F51.8Annen spesifisert ikke-organisk søvnforstyrrelse
DF518Anden form for ikke-organisk søvnforstyrrelse
- DF518AEksternt betinget søvnforstyrrelse UNS
F51.8Muu ei-elimellinen unihäiriö
F51.8Sonstige nichtorganische Schlafstörungen
F51.8Autres troubles du sommeil non organiques
F51.8overige gespecificeerde niet-organische slaapstoornissen
F51.8Other sleep disorders not due to a substance or known physiological condition
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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