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ICD-10 Guide
ICD-10 CodesB40.1

B40.1

Candidal meningitis

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

Code Description

ICD-10 B40.1 is a billable code used to indicate a diagnosis of candidal meningitis.

Key Diagnostic Point:

Candidal meningitis is a rare but serious fungal infection of the central nervous system caused by Candida species, most commonly Candida albicans. This condition typically occurs in immunocompromised patients, such as those with HIV/AIDS, cancer, or those undergoing immunosuppressive therapy. The infection can manifest as a result of hematogenous spread from other sites of infection, particularly in patients with a history of candidemia. Symptoms may include fever, headache, neck stiffness, altered mental status, and other neurological deficits. Diagnosis is confirmed through lumbar puncture and analysis of cerebrospinal fluid (CSF), which may show elevated white blood cell counts, low glucose levels, and the presence of Candida organisms. Treatment involves the use of antifungal agents, such as amphotericin B or fluconazole, and may require prolonged therapy depending on the severity of the infection and the patient's immune status. Early recognition and treatment are crucial to improve outcomes in affected patients.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Requires understanding of fungal infections and their implications in immunocompromised patients.
  • Differentiation from other types of meningitis (bacterial, viral).
  • Need for precise documentation of immunocompromised status.
  • Potential for co-infections complicating the clinical picture.

Audit Risk Factors

  • Inadequate documentation of immunocompromised status.
  • Failure to document the specific Candida species involved.
  • Misclassification of the type of meningitis.
  • Lack of supporting lab results in the medical record.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed history of immunocompromised conditions, lab results, and treatment plans.

Common Clinical Scenarios

Patients with HIV/AIDS presenting with neurological symptoms.

Billing Considerations

Ensure all relevant lab results and treatment responses are documented.

Neurology

Documentation Requirements

Neurological examination findings, imaging results, and CSF analysis.

Common Clinical Scenarios

Patients with altered mental status and signs of meningitis.

Billing Considerations

Document differential diagnoses and rationale for testing.

Coding Guidelines

Inclusion Criteria

Use B40.1 When
  • Follow the official ICD
  • CM coding guidelines for infectious diseases, ensuring accurate documentation of the patient's immunocompromised status and the specific type of meningitis
  • Include any relevant lab results and treatment plans

Exclusion Criteria

Do NOT use B40.1 When
No specific exclusions found.

Related CPT Codes

62270CPT Code

Lumbar puncture

Clinical Scenario

Used to obtain CSF for analysis in suspected meningitis cases.

Documentation Requirements

Document indication for procedure and CSF analysis results.

Specialty Considerations

Neurology and Infectious Disease specialists should ensure thorough documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of candidal meningitis, improving the ability to track and manage fungal infections in immunocompromised patients. This specificity aids in better resource allocation and treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of candidal meningitis, improving the ability to track and manage fungal infections in immunocompromised patients. This specificity aids in better resource allocation and treatment planning.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of candidal meningitis, improving the ability to track and manage fungal infections in immunocompromised patients. This specificity aids in better resource allocation and treatment planning.

Resources

Clinical References

  • •
    CDC Guidelines on Fungal Infections

Coding & Billing References

  • •
    CDC Guidelines on Fungal Infections

Frequently Asked Questions

What are the common symptoms of candidal meningitis?

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

How is candidal meningitis diagnosed?

Diagnosis is made through lumbar puncture and analysis of cerebrospinal fluid, which may show elevated white blood cell counts and the presence of Candida species.