L24.A1 vs L24.B
L24.A1 (Irritant contact dermatitis due to saliva) compared with L24.B (Irritant contact dermatitis related to stoma or fistula), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. L24.A1 carries an Excludes1 note covering L24.B: “irritant contact dermatitis related to stoma or fistula (L24.B-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| L24.A1Irritant contact dermatitis due to saliva | L24.BIrritant contact dermatitis related to stoma or fistula | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) |
| Definition | Irritant contact dermatitis due to saliva is a billable ICD-10-CM diagnosis code (L24.A1). | Irritant contact dermatitis related to stoma or fistula is a non-billable ICD-10-CM category code (L24.B). |
| Use additional code | — | code to identify any artificial opening status (Z93.-), if applicable, for contact dermatitis related to stoma secretions |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources