O11Pre-eclampsia superimposed on chronic hypertension
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 O10-O16
- Oedema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
- Official Vietnamese name
- Tiền sản giật kèm tăng huyết áp mạn tính
- Additional WHO coding guidance
- Incl.: Conditions in O10.- complicated by pre-eclampsia Pre-eclampsia superimposed on: hypertension NOS pre- existing hypertension
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.
