Bullous lichen planus
ICD-10 L43.1 is a billable code used to indicate a diagnosis of bullous lichen planus.
Bullous lichen planus is a rare variant of lichen planus, a chronic inflammatory skin condition characterized by the development of itchy, flat-topped papules. In bullous lichen planus, these papules can progress to form blisters (bullae) filled with fluid. The condition primarily affects the skin, but it can also involve mucous membranes, particularly in the oral cavity. The lesions are typically symmetrically distributed and may appear on the extremities, trunk, and genital areas. The pathogenesis of bullous lichen planus is thought to involve an autoimmune response, leading to the destruction of the basal layer of the epidermis. Diagnosis is made through clinical evaluation and may be supported by histopathological examination, which reveals a band-like infiltrate of lymphocytes at the dermal-epidermal junction. Disease progression can vary, with some patients experiencing spontaneous resolution while others may have persistent or recurrent lesions. Treatment options include topical corticosteroids, systemic immunosuppressants, and phototherapy, depending on the severity and extent of the disease.
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
L43.1 specifically covers bullous lichen planus, which is characterized by the presence of bullae in addition to the typical papular lesions of lichen planus. It is essential to differentiate it from other blistering conditions such as pemphigus vulgaris and bullous pemphigoid.
L43.1 should be used when the clinical presentation includes bullous lesions associated with lichen planus. If the lesions are solely papular without blistering, L43.0 should be used instead.
Documentation should include a detailed clinical description of the lesions, histopathological findings if available, and treatment responses. Photographic evidence may also support the diagnosis.
