F51.9 is the ICD-10 code for Nonorganic sleep disorder, unspecified. 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
What F51.9 includes
Conditions and terms that are coded here.
- Emotional sleep disorder NOS
F51.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F51.9Uspesifisert ikke-organisk søvnlidelse
DF519Ikke-organisk søvnforstyrrelse UNS
F51.9Määrittämätön ei-elimellinen unihäiriö
F51.9Nichtorganische Schlafstörung, nicht näher bezeichnet
F51.9Trouble du sommeil non organique, sans précision
F51.9niet-organische slaapstoornis, niet-gespecificeerd
F51.9Sleep disorder not due to a substance or known physiological condition, unspecified
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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