Is L24.B a billable ICD-10-CM code?

No. L24.B is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does L24.B sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Dermatitis and eczema (L20-L30).

What cannot be coded together with L24.B?

L24.B carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L24.B (L24) and apply to it just the same.

L24.B

L24.B — Irritant contact dermatitis related to stoma or fistula

Non-billable headerICD-10-CM

L24.B is a non-billable header ICD-10-CM code for irritant contact dermatitis related to stoma or fistula. It cannot be billed on its own: choose one of the more specific child codes below.

Use additional code

Add a secondary code to capture the detail described below.

code to identify any artificial opening status (Z93.-), if applicable, for contact dermatitis related to stoma secretions

Excludes1 inherited from the categories above L24.B

These are not written on L24.B, but they bind it: a note on a category applies to every code beneath it. Billing L24.B with anything listed here is a denial.

Written on L24 — Irritant contact dermatitis

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

Excludes2 inherited from the categories above L24.B

Also inherited, and the opposite of Excludes1: these conditions are not part of L24.B, but a patient can have both, so you may code both.

Written on L24 — Irritant contact dermatitis

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)

Other codes that can never be billed with L24.B

These codes carry an Excludes1 note pointing at L24.B. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L24.B alone.

L24.AIrritant contact dermatitis due to friction or contact with body fluids
L25Unspecified contact dermatitis

Risk adjustment

L24.B does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

L24.B has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead L24.B

4 child codes. Green means billable.

Related codes at this level

Codes that share L24. If L24.B is not quite right, the correct code is usually one of these.

Questions about L24.B

Is L24.B a billable ICD-10-CM code?: No. L24.B is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does L24.B sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Dermatitis and eczema (L20-L30).
What cannot be coded together with L24.B?: L24.B carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L24.B (L24) and apply to it just the same.