ICD-10 Code L50.3 – Dermatographic urticaria (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L50.3 – Dermatographic urticaria
What it is
Use this code for dermatographic urticaria, a form of hives triggered by skin stroking or scratching. It describes a physical urticaria pattern, not a generalized allergy diagnosis.
Clinical signs
Typical findings include linear wheals, redness, and itching that appear after minor pressure or friction. Clinical features vary; refer to documentation.
When to use this code
Assign L50.3 when the record clearly documents dermatographism or dermatographic urticaria as the diagnosed condition. Use it for cases where the clinician identifies wheals produced by scratching, rubbing, or similar mechanical stimulation. Check documentation if the note only says “hives” without a specific subtype.
Do not use for
Do not use this code for unspecified urticaria, allergic reactions, or other rash conditions without documentation of dermatographic triggers. Check documentation for the correct subtype.
Coding tip
Code the specific urticaria type only when the provider documents it clearly; otherwise, query or use the more specific documented diagnosis available.