2027 ICD-10-CM Diagnosis Code B55Leishmaniasis

ICD-10-CM Codes›A00–B99›B50-B64›B55

ICD-10-CM B55
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

B55 is a non-billable ICD-10-CM category code for leishmaniasis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B55.0, B55.1, B55.2, and B55.9.

Code Identity

ICD-10-CM Code
B55
Billable Status
No — Non-Billable Category
Code Describes
Leishmaniasis
Short Description
Leishmaniasis
Same as the full description in the CMS dataset.
Chapter
B50-B64
Protozoal diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB50-B64Protozoal diseases
CategoryB55Leishmaniasis
This CodeB55Leishmaniasis

Specific Coding for LeishmaniasisOverview

Non-specific codes like B55 require more characters. Use one of these billable codes instead:

  • Use B55.0 for Visceral leishmaniasis

  • Use B55.1 for Cutaneous leishmaniasis

  • Use B55.2 for Mucocutaneous leishmaniasis

  • Use B55.9 for Leishmaniasis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B55: its own notes plus those printed at block B50-B64 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block B50-B64 Protozoal diseases applies to 57 codes
  • amebiasis (A06.-)
  • other protozoal intestinal diseases (A07.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name B55, its category, or a range that includes it.

Applicable To 1

These notes mention B55.

  • O98.6 Protozoal diseases complicating pregnancy, childbirth and the puerperium
    Conditions in B50-B64 names B50-B64, which includes this code

Clinical InformationClinical

  • Leishmaniasis

    a disease caused by any of a number of species of protozoa in the genus leishmania. there are four major clinical types of this infection: cutaneous (old and new world) (leishmaniasis, cutaneous), diffuse cutaneous (leishmaniasis, diffuse cutaneous), mucocutaneous (leishmaniasis, mucocutaneous), and visceral (leishmaniasis, visceral).

Patient EducationClinical

Leishmaniasis

Leishmaniasis is a parasitic disease spread by the bite of infected sand flies. There are several different forms of leishmaniasis. The most common are cutaneous and visceral. The cutaneous type causes skin sores. The visceral type affects internal organs such as the spleen, liver, and bone marrow.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B55Overview

What is the ICD-10 code for leishmaniasis?

B55 is the ICD-10-CM category for leishmaniasis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is B55 (Leishmaniasis) a billable code?

No. This is a category header that groups the codes for leishmaniasis, and headers cannot be submitted on claims. Claims for leishmaniasis need a more specific code from this category, such as B55.0, B55.1, and B55.2.

Can B55 be reported with a code from A06?

Not as a rule. The Excludes1 note at block B50-B64, which applies to B55, lists "amebiasis (A06.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).