Diagnostic skin and sensitization tests

This code signifies the performance of various diagnostic procedures involving the skin or mucous membranes to identify sensitivities or reactions to specific substances. These tests are typically employed to investigate potential allergies, immune responses, or certain dermatological conditions.

Use this code when a patient undergoes procedures such as patch tests, scratch tests, intradermal tests, or photo patch tests to determine allergic reactions to environmental allergens, foods, drugs, or contactants. It is also applicable for sensitization tests used in the diagnosis of certain immune-mediated conditions.

• This code is for the performance of the test, not the diagnosis found.
• Always code the definitive diagnosis (e.g., allergic rhinitis, contact dermatitis) in addition to this code, if known.
• Do not use this code for laboratory tests performed on blood or other bodily fluids.