A66.8Latent yaws
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.
- Group A65-A69
- Other spirochaetal diseases
- Official Vietnamese name
- Bệnh ghẻ cóc tiềm ẩn
- Additional WHO coding guidance
- Yaws without clinical manifestations, with positive serology
Related A66 codes
A66
Yaws
A66.0
Primary diagnosis candidate
Initial lesions of yaws
A66.1
Primary diagnosis candidate
Multiple papillomata and wet crab yaws
A66.2
Primary diagnosis candidate
Other early skin lesions of yaws
A66.3
Primary diagnosis candidate
Hyperkeratosis of yaws
A66.4
Primary diagnosis candidate
Gummata and ulcers of yaws
A66.5
Primary diagnosis candidate
Gangosa
A66.6
Primary diagnosis candidate
Bone and joint lesions of yaws
A66.7
Primary diagnosis candidate
Other manifestations of yaws
A66.9
Primary diagnosis candidate
Yaws, 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.
