F44.0Dissociative amnesia
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
- Chứng quên phân ly
- Additional WHO coding guidance
- The main feature is loss of memory, usually of important recent events, that is not due to organic mental disorder, and is too great to be explained by ordinary forgetfulness or fatigue. The amnesia is usually centred on traumatic events, such as accidents or unexpected bereavements, and is usually partial and selective. Complete and generalized amnesia is rare, and is usually part of a fugue (F44.1). If this is the case, the disorder should be classified as such. The diagnosis should not be made in the presence of organic brain disorders, intoxication, or excessive fatigue. Excl.: alcohol- or other psychoactive substance-induced amnesic disorder (F10- F19 with common
Related F44 codes
F44
Dissociative [conversion] disorders
F44.1
Primary diagnosis candidate
Dissociative fugue
F44.2
Primary diagnosis candidate
Dissociative stupor
F44.3
Primary diagnosis candidate
Trance and possession disorders
F44.4
Primary diagnosis candidate
Dissociative motor disorders
F44.5
Primary diagnosis candidate
Dissociative convulsions
F44.6
Primary diagnosis candidate
Dissociative anaesthesia and sensory loss
F44.7
Primary diagnosis candidate
Mixed dissociative [conversion] disorders
F44.8
Primary diagnosis candidate
Other dissociative [conversion] disorders
F44.9
Primary diagnosis candidate
Dissociative [conversion] 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.