L81.4Other melanin hyperpigmentation
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.
- Chapter XII
- Diseases of the skin and subcutaneous tissue
- Group L80-L99
- Other disorders of the skin and subcutaneous tissue
- Official Vietnamese name
- Bệnh tăng sắc tố do melanin khác
- Additional WHO coding guidance
- Lentigo
Related L81 codes
L81
Other disorders of pigmentation
L81.0
Primary diagnosis candidate
Postinflammatory hyperpigmentation
L81.1
Primary diagnosis candidate
Chloasma
L81.2
Primary diagnosis candidate
Freckles
L81.3
Primary diagnosis candidate
Café au lait spots
L81.5
Primary diagnosis candidate
Leukoderma, not elsewhere classified
L81.6
Primary diagnosis candidate
Other disorders of diminished melanin formation
L81.7
Primary diagnosis candidate
Pigmented purpuric dermatosis
L81.8
Primary diagnosis candidate
Other specified disorders of pigmentation
L81.9
Primary diagnosis candidate
Disorder of pigmentation, 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.
