ICD-10 Code A30.1 – Tuberculoid Leprosy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A30.1 – Tuberculoid leprosy
What it is
A30.1 identifies tuberculoid leprosy, a form of Hansen disease that mainly affects the skin and peripheral nerves. It is typically a localized, paucibacillary infection with strong host immune response.
Clinical signs
Common findings include one or a few hypopigmented or reddish skin lesions with reduced sensation and possible peripheral nerve thickening. Clinical features vary; refer to documentation.
When to use this code
Use A30.1 when the provider documents tuberculoid leprosy or tuberculoid Hansen disease. Code it when the record supports this specific clinical form rather than leprosy in general. If the note only says “leprosy” without subtype, check documentation.
Do not use for
Do not use this code for indeterminate, borderline, lepromatous, or unspecified leprosy. Also avoid it when the diagnosis is only suspected or the subtype is not confirmed in the record.
Coding tip
Match the code to the documented leprosy subtype, and query the provider if the chart does not clearly state tuberculoid disease.