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ICD-10 Guide
ICD-10 CodesB57.49

B57.49

Other nervous system involvement in Chagas' disease

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

Code Description

ICD-10 B57.49 is a billable code used to indicate a diagnosis of other nervous system involvement in chagas' disease.

Key Diagnostic Point:

Chagas' disease, caused by the protozoan parasite Trypanosoma cruzi, is endemic to parts of Latin America and can lead to significant neurological complications. The disease progresses through acute and chronic phases, with the chronic phase often resulting in various forms of nervous system involvement. Patients may experience peripheral neuropathy, meningoencephalitis, or other central nervous system manifestations. Symptoms can include seizures, cognitive impairment, and motor dysfunction. Diagnosis typically involves serological tests for antibodies against T. cruzi, and imaging studies may be utilized to assess neurological damage. Treatment primarily focuses on antiparasitic medications such as benznidazole or nifurtimox, which are most effective during the acute phase. In chronic cases, symptomatic management and supportive care are essential, particularly for neurological symptoms. The complexity of managing Chagas' disease lies in its varied presentations and the need for multidisciplinary approaches to address both the infectious and neurological aspects of the disease.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of neurological symptoms that can complicate diagnosis.
  • Need for comprehensive documentation of neurological assessments.
  • Differentiation from other tropical diseases with similar presentations.
  • Potential for co-morbid conditions affecting treatment and coding.

Audit Risk Factors

  • Inadequate documentation of neurological assessments.
  • Misdiagnosis due to overlapping symptoms with other conditions.
  • Failure to document the chronicity of symptoms.
  • Inconsistent use of diagnostic tests in documentation.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

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

Common Clinical Scenarios

Diagnosis of acute Chagas' disease, management of chronic symptoms.

Billing Considerations

Documentation must clearly differentiate between acute and chronic phases.

Neurology

Documentation Requirements

Neurological examination findings, imaging results, and treatment responses.

Common Clinical Scenarios

Evaluation of patients with neurological symptoms attributed to Chagas' disease.

Billing Considerations

Focus on documenting specific neurological deficits and their impact on daily functioning.

Coding Guidelines

Inclusion Criteria

Use B57.49 When
  • Follow ICD
  • CM guidelines for coding infectious diseases, ensuring accurate documentation of the disease's phase and associated symptoms
  • Include relevant clinical findings and diagnostic tests to support the use of B57

Exclusion Criteria

Do NOT use B57.49 When
No specific exclusions found.

Related CPT Codes

86800CPT Code

Antibody test for Trypanosoma cruzi

Clinical Scenario

Used to confirm diagnosis of Chagas' disease.

Documentation Requirements

Document the reason for testing and results.

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 Chagas' disease and its complications, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of Chagas' disease and its complications, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    CDC Chagas Disease Information

Coding & Billing References

  • •
    CDC Chagas Disease Information

Frequently Asked Questions

What are the common symptoms of nervous system involvement in Chagas' disease?

Common symptoms include seizures, cognitive impairment, peripheral neuropathy, and motor dysfunction. These symptoms can vary widely among patients.