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L24

Non-billable

Irritant contact dermatitis

L24 is the ICD-10-CM code for Irritant contact dermatitis. It is a non-billable category code — use a more specific child code such as L24.0 for billing.

Status
Header (non-billable)
Chapter
L00-L99
Subcodes
12
Edition
FY2026

L00-L99 Diseases of the skin and subcutaneous tissue

Excludes1 — not coded here

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

Excludes2 — not included here

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

Frequently asked questions

What is ICD-10 code L24?
L24 is the ICD-10-CM code for "Irritant contact dermatitis". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
Is L24 a billable code?
No — L24 is a non-billable header code. Use a more specific child code (such as L24.0) for billing.
What are the subcodes of L24?
L24 has 12 more specific child codes, including L24.0, L24.1, L24.2.
What is excluded from L24?
Excludes1 (not coded here): allergy NOS (T78.40); contact dermatitis NOS (L25.9); dermatitis NOS (L30.9).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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