F91.9 is the ICD-10 code for Conduct disorder, unspecified. It is a four-character subcategory of F91 (Conduct disorders), the most specific level in the WHO edition. It belongs to the block F90–F98 (Behavioural and emotional disorders with onset usually occurring in childhood and adolescence) in Chapter V, Mental and behavioural disorders.
- Code type
- Subcategory (4 characters)
- Chapter
- V · F00–F99
- Classification
- WHO ICD-10, 2019 version
What F91.9 includes
Conditions and terms that are coded here.
- Childhood:
- behavioural disorder NOS
- conduct disorder NOS
F91.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F91.9Uspesifisert atferdsforstyrrelse
DF919Adfærdsforstyrrelse UNS
F91.9Määrittämätön käytöshäiriö
F91.9Störung des Sozialverhaltens, nicht näher bezeichnet
F91.9Trouble des conduites, sans précision
F91.9gedragsstoornis, niet-gespecificeerd
F91.9Conduct disorder, 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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