Corns and callosities (L84)

ICD-10 code L84 is used to classify corns and callosities, which are thickened areas of skin often caused by repeated pressure or friction. These skin conditions commonly develop on the feet and hands and can vary in type and location.

This code covers a range of related terms, including corns like subungual corn and interdigital corn, and various calluses such as callus of forefoot, plantar callosity, and palmar callosity. It also includes specialized forms like neurovascular corn and occupational or habit-related callosities, such as those caused by biting or prostheses. Recognizing these synonyms helps medical coders accurately apply the ICD-10 code L84 when documenting thickened skin lesions that differ based on location, cause, or presentation. This ensures precise coding for treatment and billing related to these common yet distinct skin conditions.