Borderline leprosy

This code represents borderline tuberculoid leprosy, a form of Hansen's disease characterized by a moderate number of skin lesions and some nerve involvement. It falls between the tuberculoid and lepromatous poles of the leprosy spectrum, exhibiting features of both.

Use this code when documentation specifies "borderline leprosy" or "borderline tuberculoid leprosy." It is appropriate for patients diagnosed with this specific intermediate form of Hansen's disease, often confirmed by biopsy and clinical presentation.

• Differentiate from other forms of leprosy; documentation must clearly state "borderline."
• Do not confuse with "indeterminate leprosy" (A30.0) or "tuberculoid leprosy" (A30.1).
• Code any associated complications, such as nerve damage or deformities, separately.