L24
ICD-10Non-billable categoryIrritant contact dermatitis
Official ICD-10-CM descriptor (FY2026)
Irritant contact dermatitis
L24 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- allergy NOS (T78.40)
- contact dermatitis NOS (L25.9)
- dermatitis NOS (L30.9)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- 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)
More specific codes under L24
- L24.0Irritant contact dermatitis due to detergents
- L24.1Irritant contact dermatitis due to oils and greases
- L24.2Irritant contact dermatitis due to solvents
- L24.3Irritant contact dermatitis due to cosmetics
- L24.4Irritant contact dermatitis due to drugs in contact w skin
- L24.5Irritant contact dermatitis due to other chemical products
- L24.6Irritant contact dermatitis due to food in contact with skin
- L24.7Irritant contact dermatitis due to plants, except food
- L24.8Irritant contact dermatitis due to other agentscategory
- L24.9Irritant contact dermatitis, unspecified cause
- L24.AIrritant cntct derm d/t friction or cntct with body fluidscategory
- L24.BIrritant contact dermatitis related to stoma or fistulacategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.