Lichen nitidus

This code describes lichen nitidus, a rare, chronic inflammatory skin condition characterized by numerous small, shiny, flesh-colored or reddish-brown papules. These papules typically appear on the trunk, extremities, and genitalia, and are usually asymptomatic, though mild itching may occur. The condition is benign and self-limiting, often resolving spontaneously over several years.

Use this code when documentation clearly indicates a diagnosis of lichen nitidus. This diagnosis is typically made clinically based on the characteristic appearance of the lesions, often confirmed by skin biopsy. Documentation should describe the presence of small, discrete papules consistent with the condition.

• Differentiate from other papular skin conditions like lichen planus or keratosis pilaris, which have distinct ICD-9-CM codes.
• Ensure the provider's documentation explicitly states "lichen nitidus" or provides a clinical description unequivocally matching the condition.
• This code does not specify the location of the lesions; if a specific body area is documented, it does not alter the code selection.