2026 ICD-10-CM Diagnosis Code B57.2Chagas' disease (chronic) with heart involvement

ICD-10-CM Codes›A00–B99›B50-B64›B57

ICD-10-CM B57.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B57.2 is a billable ICD-10-CM diagnosis code for Chagas' disease (chronic) with heart involvement. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 6 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
B57.2
Billable Status
Yes — Valid for Submission
Code Describes
Chagas' disease (chronic) with heart involvement
Short Description
Chagas' disease (chronic) with heart involvement
Same as the full description in the CMS dataset.
Parent Code
B57
Chagas' disease

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB50-B64Protozoal diseases
CategoryB57Chagas' disease
This CodeB57.2Chagas' disease (chronic) with heart involvement

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chagas' disease with digestive system involvement
  • Chagas' disease with heart involvement
  • Chagas' mega disease
  • Chronic Chagas' disease
  • Chronic Chagas disease with heart involvement
  • Dilatation of esophagus
  • Infection by Trypanosoma cruzi
  • Intestinal flagellate infection
  • Megacolon in Chagas' disease
  • Megaesophagus
  • Megaesophagus in Chagas' disease
  • Myocarditis due to Chaga disease
  • Parasitic myocarditis
  • Protozoan myocarditis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • American trypanosomiasis NOS
  • Chagas' disease (chronic) NOS
  • Chagas' disease (chronic) with myocarditis
  • Trypanosomiasis NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF009
Parasitic, other specified and unspecified infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Megaesophagus

    an abnormal dilation of the esophagus not due to obstruction.

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.

Convert B57.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
086.0 Chagas disease of heart
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B57.2Overview

What is the ICD-10 code for Chagas' disease (chronic) with heart involvement?

The ICD-10-CM code for Chagas' disease (chronic) with heart involvement is B57.2 (sometimes written as B572). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is B57.2 (Chagas' disease) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Chagas' disease (chronic) with heart involvement on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B57.2 group to?

When Chagas' disease (chronic) with heart involvement is the principal diagnosis on an inpatient stay, it groups to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

Is B57.2 a CC or MCC?

CMS lists B57.2 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 6 closely related codes in its exclusion list.

What is the ICD-9 equivalent of B57.2?

Under the General Equivalence Mappings, Chagas' disease (chronic) with heart involvement converts to ICD-9-CM 086.0 (Chagas disease of heart). The mapping is approximate, so confirm the match fits the documentation.