2027 ICD-10-CM Diagnosis Code B57Chagas' disease

ICD-10-CM Codes›A00–B99›B50-B64›B57

ICD-10-CM B57
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

B57 is a non-billable ICD-10-CM category code for Chagas' disease, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B57.0, B57.1, B57.2, and B57.30.

Code Identity

ICD-10-CM Code
B57
Billable Status
No — Non-Billable Category
Code Describes
Chagas' disease
Short Description
Chagas' disease
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
CategoryB57Chagas' disease
This CodeB57Chagas' disease

Specific Coding for Chagas' diseaseOverview

Non-specific codes like B57 require more characters. Use one of these billable codes instead:

  • Use B57.0 for Acute Chagas' disease with heart involvement

  • Use B57.1 for Acute Chagas' disease without heart involvement

  • Use B57.2 for Chagas' disease (chronic) with heart involvement

  • B57.3 for Chagas' disease (chronic) with digestive system involvement

  • Use B57.30 for Chagas' disease with digestive system involvement, unspecified

  • Use B57.31 for Megaesophagus in Chagas' disease

  • Use B57.32 for Megacolon in Chagas' disease

  • Use B57.39 for Other digestive system involvement in Chagas' disease

  • B57.4 for Chagas' disease (chronic) with nervous system involvement

  • Use B57.40 for Chagas' disease with nervous system involvement, unspecified

  • Use B57.41 for Meningitis in Chagas' disease

  • Use B57.42 for Meningoencephalitis in Chagas' disease

  • Use B57.49 for Other nervous system involvement in Chagas' disease

  • Use B57.5 for Chagas' disease (chronic) with other organ involvement

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B57: 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.

On B57 itself
  • American trypanosomiasis
  • infection due to Trypanosoma cruzi
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 B57, its category, or a range that includes it.

Applicable To 1

These notes mention B57.

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

Code First 1

These codes say to code first a condition named in the note, and B57 is one of the conditions named.

  • F02 Dementia in other diseases classified elsewhere
    trypanosomiasis (B56.-, B57.-)

Clinical InformationClinical

  • Chagas Disease

    infection with the protozoan parasite trypanosoma cruzi, a form of trypanosomiasis endemic in central and south america. it is named after the brazilian physician carlos chagas, who discovered the parasite. infection by the parasite (positive serologic result only) is distinguished from the clinical manifestations that develop years later, such as destruction of parasympathetic ganglia; chagas cardiomyopathy; and dysfunction of the esophagus or colon.

Patient EducationClinical

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.

The full article covers:

  • What is Chagas disease?
  • What causes Chagas disease?
  • Who is more likely to develop Chagas disease?
  • What are the symptoms of Chagas disease?
  • How is Chagas disease diagnosed?
  • What are the treatments for Chagas disease?
  • Can Chagas disease be prevented?

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 B57Overview

What is the ICD-10 code for Chagas' disease?

B57 is the ICD-10-CM category for Chagas' disease, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is B57 (Chagas' disease) a billable code?

No. This is a category header that groups the codes for Chagas' disease, and headers cannot be submitted on claims. Claims for Chagas' disease need a more specific code from this category, such as B57.0, B57.1, and B57.2.

Can B57 be reported with a code from A06?

Not as a rule. The Excludes1 note at block B50-B64, which applies to B57, 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).