Is ICD-10-CM code B57 billable?

No, B57 (Chagas' disease) 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 B57 belong to?

B57 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

B57Not billable, use a more specific code below

Chagas' disease

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

12 billable codes under B57: 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

Includes: conditions that are coded here

American trypanosomiasis
infection due to Trypanosoma cruzi

Also applies, from Protozoal diseases (B50-B64)

These notes sit on B50-B64 and apply to every code under it, including B57.

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 B57

B57 can't be used on a claim. Pick a billable code below; grey headings group them.

B57 MS-DRGs

As the principal diagnosis, the billable codes under B57 group to MS-DRG 867, 868, 869, 314, 315, or 316 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (10 of 12 codes)
DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (10 of 12 codes)
DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (10 of 12 codes)
DRG 314 Other Circulatory System Diagnoses with MCC (2 of 12 codes)
DRG 315 Other Circulatory System Diagnoses with CC (2 of 12 codes)
DRG 316 Other Circulatory System Diagnoses without CC/MCC (2 of 12 codes)

Other codes that refer to B57

Notes on these codes point to B57.

F02 Code First: trypanosomiasis (B56.-, B57.-)

About the condition

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

Chagas Disease

Chagas disease, or American trypanosomiasis, is an illness that can cause serious heart and stomach problems. It is caused by a parasite. Chagas disease is common in Latin America, especially in poor, rural areas. It can also be found in the United States, most often in people who were infected before they moved to the U.S.

Code history

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