A50.1Early congenital syphilis, latent
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.
- Official Vietnamese name
- Bệnh giang mai bẩm sinh sớm, tiềm ẩn
- Additional WHO coding guidance
- Congenital syphilis without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after birth.
Related A50 codes
A50
Congenital syphilis
A50.0
Primary diagnosis candidate
Early congenital syphilis, symptomatic
A50.2
Primary diagnosis candidate
Early congenital syphilis, unspecified
A50.3
Primary diagnosis candidate
Late congenital syphilitic oculopathy
A50.4
Primary diagnosis candidate
Late congenital neurosyphilis [juvenile neurosyphilis]
A50.5
Primary diagnosis candidate
Other late congenital syphilis, symptomatic
A50.6
Primary diagnosis candidate
Late congenital syphilis, latent
A50.7
Primary diagnosis candidate
Late congenital syphilis, unspecified
A50.9
Primary diagnosis candidate
Congenital syphilis, 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.
