Is ICD-10-CM code B55 billable?

No, B55 (Leishmaniasis) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code B55 belong to?

B55 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

B55Not billable, use a more specific code below

Leishmaniasis

In Protozoal diseases (B50-B64), chapter 1: Certain Infectious and Parasitic Diseases

4 billable codes under B55: all are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Instructional notes

Also applies, from Protozoal diseases (B50-B64)

These notes sit on B50-B64 and apply to every code under it, including B55.

Excludes1: not coded here, use a different code

amebiasis (A06.-)
other protozoal intestinal diseases (A07.-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.

Human Immunodeficiency Virus (HIV) Infections (page 19)
Infectious agents as the cause of diseases classified to other chapters (page 22)
Infections resistant to antibiotics (page 22)
Sepsis, Severe Sepsis, and Septic Shock (page 23)
Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
Zika virus infections (page 28)
Coronavirus infections (page 28)

Read Section I.C.1 (page 19)

All codes under B55

B55 can't be used on a claim. Pick a billable code below; grey headings group them.

B55 MS-DRGs

As the principal diagnosis, the billable codes under B55 group to MS-DRG 606, 607, 867, 868, or 869 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 606 Minor Skin Disorders with MCC (2 of 4 codes)
DRG 607 Minor Skin Disorders without MCC (2 of 4 codes)
DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (2 of 4 codes)
DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (2 of 4 codes)
DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (2 of 4 codes)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

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

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.