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L23.5

✓ Billable

Allergic contact dermatitis due to other chemical products

Diseases of the skin and subcutaneous tissue (L00-L99)

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Also Known As

Allergic contact dermatitis due to cementAllergic contact dermatitis due to insecticideAllergic contact dermatitis due to plasticAllergic contact dermatitis due to rubber

❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

L23
  • • allergy NOS (T78.40)
  • • contact dermatitis NOS (L25.9)
  • • dermatitis NOS (L30.9)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

L23
  • • dermatitis due to substances taken internally (L27.-)
  • • dermatitis of eyelid (H01.1-)
  • • diaper dermatitis (L22)
  • • eczema of external ear (H60.5-)
  • • irritant contact dermatitis (L24.-)
  • • perioral dermatitis (L71.0)
  • • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

Clinical Description

ICD-10-CM code L23.5 represents allergic contact dermatitis due to other chemical products. This code falls under the Diseases of the skin and subcutaneous tissue (L00-L99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory. Coders should note that L23.5 has 3 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code L23.5?

ICD-10-CM code L23.5 is "Allergic contact dermatitis due to other chemical products". It belongs to the category: Diseases of the skin and subcutaneous tissue (L00-L99).

Is L23.5 a billable ICD-10 code?

Yes, L23.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with L23.5?

L23.5 has 3 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can L23.5 be coded with other codes?

L23.5 has 7 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in L23

Other codes in the same category that may be relevant for differential coding:

L23.0Allergic contact dermatitis due to metalsL23.1Allergic contact dermatitis due to adhesivesL23.2Allergic contact dermatitis due to cosmeticsL23.3Allergic contact dermatitis due to drugs in contact with skinL23.4Allergic contact dermatitis due to dyesL23.6Allergic contact dermatitis due to food in contact with the skinL23.7Allergic contact dermatitis due to plants, except foodL23.8Allergic contact dermatitis due to other agentsL23.9Allergic contact dermatitis, unspecified cause

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Code Information

CodeL23.5
BillableYes
ParentL23
CategoryDiseases of the skin and subcutaneous tissue (L00-L99)
Excludes13 rule(s)
Excludes27 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)