O99.3Mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium
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 XV
- Pregnancy, childbirth and the puerperium
- Group O94-O99
- Other obstetric conditions, not elsewhere classified
- Official Vietnamese name
- Rối loạn tâm thần và/hoặc bệnh lý hệ thần kinh gây biến chứng cho thai kỳ, sinh đẻ và/hoặc thời kỳ sau đẻ
- Additional WHO coding guidance
- Conditions in F00-F99 and G00-G99 Excl.: postnatal depression (F53.0) pregnancy- related peripheral neuritis (O26.8) puerperal psychosis (F53.1)
Related O99 codes
O99
Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
O99.0
Primary diagnosis candidate
Anaemia complicating pregnancy, childbirth and the puerperium
O99.1
Primary diagnosis candidate
Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, childbirth and the puerperium
O99.2
Primary diagnosis candidate
Endocrine, nutritional and metabolic diseases complicating pregnancy, childbirth and the puerperium
O99.4
Primary diagnosis candidate
Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium
O99.5
Primary diagnosis candidate
Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium
O99.6
Primary diagnosis candidate
Diseases of the digestive system complicating pregnancy, childbirth and the puerperium
O99.7
Primary diagnosis candidate
Diseases of the skin and subcutaneous tissue complicating pregnancy, childbirth and the puerperium
O99.8
Primary diagnosis candidate
Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium
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.
