L24Irritant contact dermatitis

L24 is the ICD-10-CM diagnosis code for irritant contact dermatitis. It belongs to block L20-L30 (dermatitis and eczema) and chapter 12 (diseases of the skin and subcutaneous tissue). It is a header code, so it can't be reported by itself; one of its 12 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: L24.0 (due to detergents), L24.1 (due to oils and greases), L24.2 (due to solvents), L24.3 (due to cosmetics), L24.4 (due to drugs in contact with skin), L24.5 (due to other chemical products), L24.6 (due to food in contact with skin), L24.7 (due to plants, except food) and 4 more.

Don't report L24 together with the conditions in its Excludes1 note: allergy NOS (T78.40), contact dermatitis NOS (L25.9) and dermatitis NOS (L30.9).

The conditions in its Excludes2 note aren't part of L24, but may be coded alongside it if the patient has both: allergic contact dermatitis (L23.-), dermatitis due to substances taken internally (L27.-), dermatitis of eyelid (H01.1-), diaper dermatitis (L22) and 3 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.