L98.4Chronic ulcer of skin, not elsewhere classified
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
- Loét da mạn tính, không phân loại mục khác
- Additional WHO coding guidance
- Chronic ulcer of skin NOS Tropical ulcer NOS Ulcer of skin NOS Excl.: decubitus [pressure] ulcer and pressure area (L89.-) gangrene (R02) skin infections (L00-L08) specific infections classified to A00-B99 ulcer of lower limb NEC (L97) varicose ulcer (I83.0, I83.2)
Related L98 codes
L98
Other disorders of skin and subcutaneous tissue, not elsewhere classified
L98.0
Primary diagnosis candidate
Pyogenic granuloma
L98.1
Primary diagnosis candidate
Factitial dermatitis Neurotic excoriation
L98.2
Primary diagnosis candidate
Febrile neutrophilic dermatosis [Sweet]
L98.3
Primary diagnosis candidate
Eosinophilic cellulitis [Wells]
L98.5
Primary diagnosis candidate
Mucinosis of skin
L98.6
Primary diagnosis candidate
Other infiltrative disorders of skin and subcutaneous tissue
L98.7
Primary diagnosis candidate
Excessive and redundant skin and subcutaneous tissue
L98.8
Primary diagnosis candidate
Other specified disorders of skin and subcutaneous tissue
L98.9
Primary diagnosis candidate
Disorder of skin and subcutaneous tissue, 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.
