L23Header code — not billable
Allergic contact dermatitis
- Chapter
- 12. Diseases of the skin and subcutaneous tissue
- Category
- L23
- Effective date
- October 1, 2026
Related codes in category L23
L23.0Allergic contact dermatitis due to metalsYesL23.1Allergic contact dermatitis due to adhesivesYesL23.2Allergic contact dermatitis due to cosmeticsYesL23.3Allergic contact dermatitis due to drugs in contact w skinYesL23.4Allergic contact dermatitis due to dyesYesL23.5Allergic contact dermatitis due to other chemical productsYesL23.6Allergic contact dermatitis due to food in contact w skinYesL23.7Allergic contact dermatitis due to plants, except foodYesL23.8Allergic contact dermatitis due to other agentsL23.81Allergic contact dermatitis due to animal (cat) (dog) danderYesL23.89Allergic contact dermatitis due to other agentsYesL23.9Allergic contact dermatitis, unspecified causeYes
Frequently asked questions
What is ICD-10 code L23?
L23 is an ICD-10-CM diagnosis code for Allergic contact dermatitis.
Is L23 a billable code?
No. L23 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is L23 in?
L23 falls under Chapter 12: Diseases of the skin and subcutaneous tissue.
When did L23 become effective?
L23 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to L23?
L23 belongs to category L23, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.