ICD-10-CM Code B55.9

Leishmaniasis, unspecified

Version 2021 Billable Code

Valid for Submission

B55.9 is a billable code used to specify a medical diagnosis of leishmaniasis, unspecified. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code B55.9 might also be used to specify conditions or terms like hemorrhagic leishmaniasis, infection by leishmania infantum, leishmanial pneumonia, leishmaniasis, panamanian leishmaniasis, pneumonia due to parasitic infestation, etc

Short Description:Leishmaniasis, unspecified
Long Description:Leishmaniasis, unspecified

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code B55.9 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Hemorrhagic leishmaniasis
  • Infection by Leishmania infantum
  • Leishmanial pneumonia
  • Leishmaniasis
  • Panamanian leishmaniasis
  • Pneumonia due to parasitic infestation

Clinical Information

  • 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.
  • LEISHMANIASIS MUCOCUTANEOUS-. a disease characterized by the chronic progressive spread of lesions from new world cutaneous leishmaniasis caused by species of the l. braziliensis complex to the nasal pharyngeal and buccal mucosa some time after the appearance of the initial cutaneous lesion. nasal obstruction and epistaxis are frequent presenting symptoms.
  • LEISHMANIASIS VISCERAL-. a chronic disease caused by leishmania donovani and transmitted by the bite of several sandflies of the genera phlebotomus and lutzomyia. it is commonly characterized by fever chills vomiting anemia hepatosplenomegaly leukopenia hypergammaglobulinemia emaciation and an earth gray color of the skin. the disease is classified into three main types according to geographic distribution: indian mediterranean or infantile and african.
  • LEISHMANIASIS CUTANEOUS-. an endemic disease that is characterized by the development of single or multiple localized lesions on exposed areas of skin that typically ulcerate. the disease has been divided into old and new world forms. old world leishmaniasis is separated into three distinct types according to epidemiology and clinical manifestations and is caused by species of the l. tropica and l. aethiopica complexes as well as by species of the l. major genus. new world leishmaniasis also called american leishmaniasis occurs in south and central america and is caused by species of the l. mexicana or l. braziliensis complexes.
  • LEISHMANIASIS DIFFUSE CUTANEOUS-. a form of leishmaniasis cutaneous caused by leishmania aethiopica in ethiopia and kenya l. pifanoi in venezuela l. braziliensis in south america and l. mexicana in central america. this disease is characterized by massive dissemination of skin lesions without visceral involvement.
  • LEISHMANIASIS VACCINES-. vaccines or candidate vaccines used to prevent infection with leishmania.

Diagnostic Related Groups

The ICD-10 code B55.9 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert B55.9 to ICD-9

  • 085.9 - Leishmaniasis NOS

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Protozoal diseases (B50-B64)
      • Leishmaniasis (B55)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Also called: Kala-azar

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. People with this form usually have fever, weight loss, and an enlarged spleen and liver.

Leishmaniasis is found in parts of about 88 countries. Most of these countries are in the tropics and subtropics. It is possible but very unlikely that you would get this disease in the United States. But you should be aware of it if you are traveling to the Middle East or parts of Central America, South America, Asia, Africa or southern Europe.

Treatment is with medicines that contain antimony, a type of metal, or with strong antibiotics. The best way to prevent the disease is to protect yourself from sand fly bites:

  • Stay indoors from dusk to dawn, when sand flies are the most active
  • Wear long pants and long-sleeved shirts when outside
  • Use insect repellent and bed nets as needed

Centers for Disease Control and Prevention

  • Leishmaniasis (Medical Encyclopedia)

[Learn More]