O28Abnormal findings on antenatal screening of mother
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 O28 directly
Use the most specific code supported by the record.
- Chapter XV
- Pregnancy, childbirth and the puerperium
- Official Vietnamese name
- Phát hiện bất thường ở thai phụ khi khám sàng lọc trước sinh
- Additional WHO coding guidance
- Excl.: diagnostic findings classified elsewhere - see Alphabetical Index maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
Related O28 codes
O28.0
Primary diagnosis candidate
Abnormal haematological finding on antenatal screening of mother
O28.1
Primary diagnosis candidate
Abnormal biochemical finding on antenatal screening of mother
O28.2
Primary diagnosis candidate
Abnormal cytological finding on antenatal screening of mother
O28.3
Primary diagnosis candidate
Abnormal ultrasonic finding on antenatal screening of mother
O28.4
Primary diagnosis candidate
Abnormal radiological finding on antenatal screening of mother
O28.5
Primary diagnosis candidate
Abnormal chromosomal and genetic finding on antenatal screening of mother
O28.8
Primary diagnosis candidate
Other abnormal findings on antenatal screening of mother
O28.9
Primary diagnosis candidate
Abnormal finding on antenatal screening of mother, 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.
