L43Lichen planus
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 L43 directly
Use the most specific code supported by the record.
- Chapter XII
- Diseases of the skin and subcutaneous tissue
- Group L40-L45
- Papulosquamous disorders
- Official Vietnamese name
- Lichen phẳng
- Additional WHO coding guidance
- Excl.: lichen planopilaris (L66.1)
Related L43 codes
L43.0
Primary diagnosis candidate
Hypertrophic lichen planus
L43.1
Primary diagnosis candidate
Bullous lichen planus
L43.2
Primary diagnosis candidate
Lichenoid drug reaction
L43.3
Primary diagnosis candidate
Subacute (active) lichen planus
L43.8
Primary diagnosis candidate
Other lichen planus
L43.9
Primary diagnosis candidate
Lichen planus, 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.
