ICD-10 Code A30.0 – Indeterminate leprosy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A30.0 – Indeterminate leprosy
What it is
A30.0 identifies indeterminate leprosy, the earliest or uncertain form of Hansen disease. It is used when the diagnosis is leprosy, but the clinical type has not yet developed into a more specific form.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include one or more hypopigmented or reddish skin lesions with reduced sensation, but classification can remain uncertain early in the disease.
When to use this code
Use A30.0 when the provider documents indeterminate leprosy or an early leprosy presentation that has not been classified as tuberculoid, lepromatous, or another subtype. It may also fit when the record states Hansen disease with indeterminate features. Check documentation if the subtype is unclear.
Do not use for
Do not use this code for other specified forms of leprosy, such as tuberculoid or lepromatous disease. If the record only says suspected leprosy without confirmation, check documentation before coding.
Coding tip
Code the most specific leprosy type documented; if the subtype is not stated, query the provider rather than assuming A30.0.