F45.4Persistent somatoform pain disorder
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter V
- Mental and behavioural disorders
- Group F40-F48
- Neurotic, stress- related and somatoform disorders
- Official Vietnamese name
- Rối loạn đau dạng cơ thể dai dẳng
- Additional WHO coding guidance
- The predominant complaint is of persistent, severe, and distressing pain, which cannot be explained fully by a physiological process or a physical disorder, and which occurs in association with emotional conflict or psychosocial problems that are sufficient to allow the conclusion that they are the main causative influences. The result is usually a marked increase in support and attention, either personal or medical. Pain presumed to be of psychogenic origin occurring during the course of depressive disorders or schizophrenia should not be included here. Psychalgia Psychogenic: backache headache Somatoform pain disorder Excl.: backache NOS (M54.9)
Related F45 codes
F45
Somatoform disorders
F45.0
Primary diagnosis candidate
Somatization disorder
F45.1
Primary diagnosis candidate
Undifferentiated somatoform disorder
F45.2
Primary diagnosis candidate
Hypochondriacal disorder
F45.3
Primary diagnosis candidate
Somatoform autonomic dysfunction
F45.8
Primary diagnosis candidate
Other somatoform disorders
F45.9
Primary diagnosis candidate
Somatoform disorder, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.