F43.9 is the ICD-10 code for Reaction to severe stress, unspecified. It is a four-character subcategory of F43 (Reaction to severe stress, and adjustment disorders), the most specific level in the WHO edition. It belongs to the block F40–F48 (Neurotic, stress-related and somatoform disorders) in Chapter V, Mental and behavioural disorders.
- Code type
- Subcategory (4 characters)
- Chapter
- V · F00–F99
- Classification
- WHO ICD-10, 2019 version
F43.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
F43.9Uspesifisert reaksjon på alvorlig belastning
DF439Belastningsreaktion UNS
F43.9Määrittämätön reaktio vaikeaan stressiin
F43.9Reaktion auf schwere Belastung, nicht näher bezeichnet
F43.9Réaction à un facteur de stress sévère, sans précision
F43.9reactie op ernstige stress, niet-gespecificeerd
F43.9Reaction to severe stress, 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.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free