ICD-10 Code A30 – Leprosy [Hansen’s disease] (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A30 – Leprosy [Hansen’s disease]
What it is
A30 identifies leprosy, also called Hansen’s disease, a chronic infection caused by Mycobacterium leprae. It mainly affects the skin and peripheral nerves, and may also involve the eyes and upper airway.
Clinical signs
Typical findings include skin lesions with reduced sensation, numbness, and peripheral nerve enlargement. Clinical features vary; refer to documentation for the specific form and extent of disease.
When to use this code
Use A30 when the record documents leprosy or Hansen’s disease as the confirmed diagnosis. It is appropriate for encounters focused on evaluation, follow-up, or disease management when the provider names this condition. Check documentation if the note only describes neuropathy or skin changes without confirmation.
Do not use for
Do not use A30 for suspected leprosy without confirmation, or for unrelated skin lesions and neuropathy with another established cause. If the chart does not clearly identify Hansen’s disease, check documentation.
Coding tip
Verify the provider’s exact wording and any documented subtype or manifestation before assigning A30.