O03Spontaneous abortion
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 O03 directly
Use the most specific code supported by the record.
- Chapter XV
- Pregnancy, childbirth and the puerperium
- Group O00-O08
- Pregnancy with abortive outcome
- Official Vietnamese name
- Sảy thai tự nhiên
- Additional WHO coding guidance
- [See before O03 for subdivisions] Incl.: miscarriage
Related O03 codes
O03.0
Primary diagnosis candidate
Spontaneous abortion, incomplete, complicated by genital tract and pelvic infection
O03.1
Primary diagnosis candidate
Spontaneous abortion, incomplete, complicated by delayed or excessive haemorrhage
O03.2
Primary diagnosis candidate
Spontaneous abortion, incomplete, complicated by embolism
O03.3
Primary diagnosis candidate
Spontaneous abortion, incomplete, with other and unspecified complications
O03.4
Primary diagnosis candidate
Spontaneous abortion, incomplete, without complication
O03.5
Primary diagnosis candidate
Spontaneous abortion, complete or unspecified, complicated by genital tract and pelvic infection
O03.6
Primary diagnosis candidate
Spontaneous abortion, complete or unspecified, complicated by delayed or excessive haemorrhage
O03.7
Primary diagnosis candidate
Spontaneous abortion, complete or unspecified, complicated by embolism
O03.8
Primary diagnosis candidate
Spontaneous abortion, complete or unspecified, with other and unspecified complications
O03.9
Primary diagnosis candidate
Spontaneous abortion, complete or unspecified, without complication
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.
