2026 ICD-10-CM Diagnosis Code A30Leprosy [Hansen's disease]

ICD-10-CM Codes›A00–B99›A30-A49›A30

ICD-10-CM A30
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A30 is a non-billable ICD-10-CM category code for leprosy [Hansen's disease], so it cannot be submitted on claims. Use a more specific code from this category instead, such as A30.0, A30.1, A30.2, and A30.3.

Code Identity

ICD-10-CM Code
A30
Billable Status
No — Non-Billable Category
Code Describes
Leprosy [Hansen's disease]
Chapter
A30-A49
Other bacterial diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA30-A49Other bacterial diseases
CategoryA30Leprosy [Hansen's disease]
This CodeA30Leprosy [Hansen's disease]

Specific Coding for Leprosy [Hansen's disease]Overview

Non-specific codes like A30 require more characters. Use one of these billable codes instead:

  • Use A30.0 for Indeterminate leprosy

  • Use A30.1 for Tuberculoid leprosy

  • Use A30.2 for Borderline tuberculoid leprosy

  • Use A30.3 for Borderline leprosy

  • Use A30.4 for Borderline lepromatous leprosy

  • Use A30.5 for Lepromatous leprosy

  • Use A30.8 for Other forms of leprosy

  • Use A30.9 for Leprosy, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • infection due to Mycobacterium leprae

Type 1 Excludes

  • sequelae of leprosy B92

Clinical InformationClinical

  • Leprosy

    a chronic granulomatous infection caused by mycobacterium leprae. the granulomatous lesions are manifested in the skin, the mucous membranes, and the peripheral nerves. two polar or principal types are lepromatous and tuberculoid.

  • Leprosy, Borderline

    a form of leprosy in which there are clinical manifestations of both principal types (lepromatous and tuberculoid). the disease may shift toward one of these two polar or principal forms.

  • Leprosy, Lepromatous

    a chronic communicable infection which is a principal or polar form of leprosy. this disorder is caused by mycobacterium leprae and produces diffuse granulomatous skin lesions in the form of nodules, macules, or papules. the peripheral nerves are involved symmetrically and neural sequelae occur in the advanced stage.

  • Leprosy, Multibacillary

    a form of leprosy classified by the world health organization for the purpose of treatment, based on clinical manifestations and skin smear results. patients with multibacillary leprosy have six or more lesions with or without positive skin smear results for the causative agent mycobacterium leprae. multibacillary leprosy encompasses borderline lepromatous, midborderline, and lepromatous leprosy.

  • Leprosy, Paucibacillary

    a form of leprosy classified by the world health organization for the purpose of treatment, based on clinical manifestations and skin smear results. patients with paucibacillary leprosy have fewer than six skin lesions with no causative agent mycobacterium leprae on any slit-skin smear testing. paucibacillary leprosy encompasses indeterminate, borderline tuberculoid, and tuberculoid leprosy.

  • Leprosy, Tuberculoid

    a principal or polar form of leprosy in which the skin lesions are few and are sharply demarcated. peripheral nerve involvement is pronounced and may be severe. unlike lepromatous leprosy (leprosy, lepromatous), the lepromin test is positive. tuberculoid leprosy is rarely a source of infection to others.

  • Mycobacterium leprae

    a species of gram-positive, aerobic bacteria that causes leprosy in man. its organisms are generally arranged in clumps, rounded masses, or in groups of bacilli side by side.

Patient EducationClinical

Mycobacterial Infections

Mycobacteria are a type of germ. There are many different kinds. The most common one causes tuberculosis. Another one causes leprosy. Still others cause infections that are called atypical mycobacterial infections. They aren't "typical" because they don't cause tuberculosis.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A30Overview

Is A30 (Leprosy [Hansen's disease]) a billable code?

No. This is a category header that groups the codes for leprosy [Hansen's disease], and headers cannot be submitted on claims. Claims for leprosy [Hansen's disease] need a more specific code from this category, such as A30.0, A30.1, and A30.2.