Chronic bullous disease of childhood

This code represents a rare, autoimmune blistering skin disorder primarily affecting young children, characterized by subepidermal bullae formation. It is a chronic condition, meaning it persists over time, and is distinct from other forms of bullous pemphigoid.

Apply this code when documentation confirms a diagnosis of chronic bullous disease of childhood, often referred to as childhood linear IgA dermatosis. Supporting documentation should include clinical findings of blistering lesions, typically on the lower trunk, buttocks, and inner thighs, and often a positive direct immunofluorescence showing linear IgA deposits at the dermal-epidermal junction.

• Differentiate from bullous pemphigoid (L12.0) and other pemphigoid disorders, as the specific IgA antibody involvement is key.
• Ensure the "childhood" aspect is clearly documented to support this specific diagnosis.
• Consider sequencing with codes for associated symptoms or complications, such as pruritus or secondary infection, if present.