Urticaria, unspecified

This code represents a skin condition characterized by the sudden appearance of itchy, raised welts (hives) on the skin, without a more specific underlying cause or type being identified. These lesions, also known as wheals, can vary in size and shape and often blanch with pressure. The condition is typically transient but can be recurrent.

This code is appropriate when the provider documents "urticaria" or "hives" without further specification of its etiology (e.g., allergic, chronic, contact, cold-induced). It should be used when the medical record lacks sufficient detail to assign a more precise code for the type of urticaria.

• Avoid using this code if the documentation specifies the type of urticaria (e.g., acute, chronic, allergic, contact).
• Always query the provider for more specific details if "urticaria" is documented without further clarification.
• Consider sequencing this code after an external cause code if the urticaria is clearly linked to an environmental factor, but only if the specific type of urticaria is not known.