L23Allergic contact dermatitis
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 L23 directly
Use the most specific code supported by the record.
- Chapter XII
- Diseases of the skin and subcutaneous tissue
- Group L20-L30
- Dermatitis and eczema
- Official Vietnamese name
- Viêm da tiếp xúc dị ứng
- Additional WHO coding guidance
- Incl.: allergic contact eczema Excl.: allergy NOS (T78.4) dermatitis (of): NOS (L30.9) contact NOS (L25.9) diaper [napkin] (L22) due to substances taken internally (L27.-) eyelid (H01.1) irritant contact (L24.-) perioral (L71.0) eczema of external ear (H60.5) radiation-
Related L23 codes
L23.0
Primary diagnosis candidate
Allergic contact dermatitis due to metals
L23.1
Primary diagnosis candidate
Allergic contact dermatitis due to adhesives
L23.2
Primary diagnosis candidate
Allergic contact dermatitis due to cosmetics
L23.3
Primary diagnosis candidate
Allergic contact dermatitis due to drugs in contact with skin
L23.4
Primary diagnosis candidate
Allergic contact dermatitis due to dyes
L23.5
Primary diagnosis candidate
Allergic contact dermatitis due to other chemical products
L23.6
Primary diagnosis candidate
Allergic contact dermatitis due to food in contact with skin
L23.7
Primary diagnosis candidate
Allergic contact dermatitis due to plants, except food
L23.8
Primary diagnosis candidate
Allergic contact dermatitis due to other agents
L23.9
Primary diagnosis candidate
Allergic contact dermatitis, unspecified cause
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.
