F31.9 is the ICD-10 code for Bipolar affective disorder, unspecified. It is a four-character subcategory of F31 (Bipolar affective disorder), the most specific level in the WHO edition. It belongs to the block F30–F39 (Mood [affective] disorders) in Chapter V, Mental and behavioural disorders.
- Code type
- Subcategory (4 characters)
- Chapter
- V · F00–F99
- Classification
- WHO ICD-10, 2019 version
What F31.9 includes
Conditions and terms that are coded here.
- Manic depression NOS
F31.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F31.9Uspesifisert bipolar affektiv lidelse
DF319Bipolar affektiv sindslidelse UNS
- DF319ABipolar type 1 affektiv sindslidelse UNS
F31.9Määrittämätön kaksisuuntainen mielialahäiriö
F31.9Bipolare affektive Störung, nicht näher bezeichnet
F31.9Trouble affectif bipolaire, sans précision
F31.9bipolaire affectieve stoornis, niet-gespecificeerd
F31.9Bipolar 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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