A30.4

What This Code Means

Borderline lepromatous leprosy is a form of Hansen's disease (leprosy) that falls between the lepromatous and borderline tuberculoid types, characterized by numerous bacteria in the skin and nerves with moderate immune response. This is a chronic infectious disease caused by Mycobacterium leprae that affects the skin and peripheral nerves.

Coding Tips

• •Verify the specific type of leprosy documented by the physician, as A30 codes are differentiated by leprosy classification (tuberculoid, borderline tuberculoid, borderline, borderline lepromatous, and lepromatous)
• •Leprosy is a reportable disease in most jurisdictions; ensure proper documentation and consider adding a code for any complications such as neuritis (G63.8) or skin manifestations if separately documented