Borderline tuberculoid leprosy

This code represents a specific, less severe form of leprosy (Hansen's disease) characterized by a relatively strong immune response. Patients typically present with a few well-defined, hypopigmented or erythematous skin lesions with some sensory loss, and nerve involvement is usually asymmetric and less extensive than in other forms.

Use this code when documentation clearly indicates a diagnosis of borderline tuberculoid leprosy, often confirmed by histopathological examination of skin biopsies showing granulomas with some acid-fast bacilli. This diagnosis is typically made by infectious disease specialists or dermatologists based on clinical presentation, histopathology, and sometimes nerve conduction studies.

• Ensure the documentation specifies "borderline tuberculoid" and not just general "tuberculoid leprosy" or other forms.
• Always review the pathology report if available, as it often provides the definitive classification of the leprosy type.
• Consider co-reporting any associated complications, such as nerve damage or deformities, with appropriate secondary codes.