VITiếng Việt
ICD-10 Vietnam

A51Early syphilis

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 A51 directly

Use the most specific code supported by the record.

Chapter I
Certain infectious and parasitic diseases
Group A50-A64
Infections with a predominantly sexual mode of transmission
Official Vietnamese name
Bệnh giang mai sớm

Related A51 codes

A51.0 Primary diagnosis candidate Primary genital syphilis A51.1 Primary diagnosis candidate Primary anal syphilis A51.2 Primary diagnosis candidate Primary syphilis of other sites A51.3 Primary diagnosis candidate Secondary syphilis of skin and mucous membranes A51.4 Primary diagnosis candidate Other secondary syphilis A51.5 Primary diagnosis candidate Early syphilis, latent A51.9 Primary diagnosis candidate Early 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.