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ICD-10 Guide
ICD-10 CodesB57.42

B57.42

Meningoencephalitis in Chagas' disease

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 B57.42 is a billable code used to indicate a diagnosis of meningoencephalitis in chagas' disease.

Key Diagnostic Point:

Meningoencephalitis in Chagas' disease is a severe neurological manifestation of Chagas' disease, caused by the protozoan parasite Trypanosoma cruzi. This condition typically arises during the acute phase of the infection, although it can also occur in the chronic phase. Patients may present with symptoms such as fever, headache, neck stiffness, altered mental status, and focal neurological deficits. The diagnosis is often confirmed through serological tests for T. cruzi antibodies, along with imaging studies like CT or MRI to assess for any brain lesions. Treatment primarily involves the use of antiparasitic medications such as benznidazole or nifurtimox, which are most effective during the acute phase. Supportive care is crucial, including management of symptoms and complications. Given the potential for severe outcomes, early recognition and intervention are essential for improving patient prognosis.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between acute and chronic manifestations of Chagas' disease.
  • Understanding the neurological implications and associated symptoms.
  • Navigating the specific treatment protocols and their documentation.
  • Recognizing the need for serological testing and imaging studies.

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings.
  • Failure to document serological test results.
  • Misclassification of acute versus chronic Chagas' disease.
  • Lack of clarity in treatment protocols followed.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, serological test results, and treatment plans.

Common Clinical Scenarios

Patients presenting with acute febrile illness and neurological symptoms.

Billing Considerations

Documentation must clearly differentiate between acute and chronic phases of Chagas' disease.

Neurology

Documentation Requirements

Neurological examination findings, imaging results, and treatment responses.

Common Clinical Scenarios

Patients with altered mental status or focal neurological deficits.

Billing Considerations

Need for comprehensive documentation of neurological assessments and any changes in patient status.

Coding Guidelines

Inclusion Criteria

Use B57.42 When
  • According to ICD
  • 10 guidelines, B57
  • 42 should be used when there is clear documentation of meningoencephalitis specifically linked to Chagas' disease
  • It is important to include relevant clinical findings and treatment details to support the coding

Exclusion Criteria

Do NOT use B57.42 When
No specific exclusions found.

Related CPT Codes

86701CPT Code

Antibody test for Trypanosoma cruzi

Clinical Scenario

Used to confirm diagnosis of Chagas' disease in patients presenting with neurological symptoms.

Documentation Requirements

Document the reason for testing and the clinical findings leading to the test.

Specialty Considerations

Infectious disease specialists should ensure comprehensive documentation of test results.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like meningoencephalitis in Chagas' disease, improving data accuracy and facilitating better tracking of disease prevalence and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like meningoencephalitis in Chagas' disease, improving data accuracy and facilitating better tracking of disease prevalence and treatment outcomes.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    CDC Chagas Disease Information

Coding & Billing References

  • •
    CDC Chagas Disease Information

Frequently Asked Questions

What are the common symptoms of meningoencephalitis in Chagas' disease?

Common symptoms include fever, headache, neck stiffness, altered mental status, and focal neurological deficits.

How is Chagas' disease diagnosed?

Diagnosis is typically made through serological tests for T. cruzi antibodies and imaging studies to assess neurological involvement.