L66Cicatricial alopecia [scarring hair loss]
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 L66 directly
Use the most specific code supported by the record.
- Chapter XII
- Diseases of the skin and subcutaneous tissue
- Group L60-L75
- Disorders of skin appendages
- Official Vietnamese name
- Rụng tóc có sẹo
Related L66 codes
L66.0
Primary diagnosis candidate
Pseudopelade
L66.1
Primary diagnosis candidate
Lichen planopilaris
L66.2
Primary diagnosis candidate
Folliculitis decalvans
L66.3
Primary diagnosis candidate
Perifolliculitis capitis abscedens
L66.4
Primary diagnosis candidate
Folliculitis ulerythematosa reticulata
L66.8
Primary diagnosis candidate
Other cicatricial alopecia
L66.9
Primary diagnosis candidate
Cicatricial alopecia, 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.
