L50 vs L71

L50 (Urticaria) compared with L71 (Rosacea), 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. L50 carries an Excludes1 note covering L71: “rosacea (L71.-)”

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

	L50Urticaria	L71Rosacea
Billing status	Non-billable header Report instead: L50.0, L50.1, L50.2, L50.3, L50.4	Non-billable header Report instead: L71.0, L71.1, L71.8, L71.9
Classification	L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99)	L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99)
Definition	Urticaria is a non-billable ICD-10-CM category code (L50).	Rosacea is a non-billable ICD-10-CM category code (L71).
Use additional code	—	code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

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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