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Compare/L27 vs L50

L27 vs L50

L27 (Dermatitis due to substances taken internally) compared with L50 (Urticaria), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. L27 carries an Excludes2 note covering L50: “urticaria (L50.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

L27Dermatitis due to substances taken internallyL50Urticaria
Billing statusNon-billable header

Report instead: L27.0, L27.1, L27.2, L27.8, L27.9

Non-billable header

Report instead: L50.0, L50.1, L50.2, L50.3, L50.4

ClassificationL00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99)L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99)
DefinitionDermatitis due to substances taken internally is a non-billable ICD-10-CM category code (L27).Urticaria is a non-billable ICD-10-CM category code (L50).
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources