O10Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use O10 directly
Use the most specific code supported by the record.
- Chapter XV
- Pregnancy, childbirth and the puerperium
- Group O10-O16
- Oedema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
- Official Vietnamese name
- Tăng huyết áp mắc từ trước gây biến chứng cho thai kỳ, sinh đẻ và/hoặc thời kỳ sau đẻ
- Additional WHO coding guidance
- Incl.: the listed conditions with pre- existing proteinuria Excl.: that with superimposed pre- eclampsia (O11)
Related O10 codes
O10.0
Primary diagnosis candidate
Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium
O10.1
Primary diagnosis candidate
Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
O10.2
Primary diagnosis candidate
Pre-existing hypertensive renal disease complicating pregnancy, childbirth and the puerperium
O10.3
Primary diagnosis candidate
Pre-existing hypertensive heart and renal disease complicating pregnancy, childbirth and the puerperium
O10.4
Primary diagnosis candidate
Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium
O10.9
Primary diagnosis candidate
Unspecified pre- existing hypertension 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.
