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v1.0.0
ICD-10 Guide
ICD-10 CodesA01.01

A01.01

Typhoid meningitis

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 A01.01 is a billable code used to indicate a diagnosis of typhoid meningitis.

Key Diagnostic Point:

Typhoid meningitis

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Complex clinical presentation with neurological involvement
  • Requires specialized laboratory confirmation
  • Multiple differential diagnoses to consider
  • Severity assessment for appropriate treatment planning

Audit Risk Factors

  • Laboratory confirmation documentation
  • Neurological assessment records
  • Treatment response monitoring
  • Complication management

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Laboratory confirmation of Salmonella typhi with evidence of meningeal involvement through lumbar puncture and CSF analysis

Common Clinical Scenarios

Patients presenting with typhoid fever symptoms plus neurological signs such as altered mental status, headache, or focal neurological deficits

Billing Considerations

Requires documentation of both infectious disease consultation and neurological evaluation for proper reimbursement

Neurology

Documentation Requirements

Neurological examination findings, imaging studies if indicated, and lumbar puncture results showing evidence of meningitis

Common Clinical Scenarios

Neurological complications in the setting of confirmed typhoid fever requiring specialized neurological care

Billing Considerations

Document neurological interventions and monitoring separate from infectious disease management

Coding Guidelines

Inclusion Criteria

Use A01.01 When
  • Comprehensive Coding Guidelines for ICD
  • 10 Code A01
  • Typhoid Meningitis
  • When to Use This Code vs Related Codes
  • 01 Typhoid meningitis is used specifically for cases where an individual has developed meningitis as a complication of typhoid fever
  • It is crucial to use this code when the clinical documentation indicates that meningitis is directly attributable to a typhoid infection
  • Related Codes:
  • 00: Typhoid fever, unspecified

Exclusion Criteria

Do NOT use A01.01 When
  • Inclusion and Exclusion Criteria
  • Exclusion Criteria:

Related CPT Codes

87045CPT Code

Culture, bacterial, any source

Clinical Scenario

Blood culture to confirm Salmonella typhi infection

Documentation Requirements

Document source of culture and clinical indication

Specialty Considerations

Essential for definitive diagnosis

62270CPT Code

Spinal puncture, lumbar, diagnostic

Clinical Scenario

Lumbar puncture to evaluate for meningitis in suspected typhoid meningitis

Documentation Requirements

Document neurological indications and findings

Specialty Considerations

Performed by trained physicians with proper monitoring

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The implementation of ICD-10 has had a significant impact on the coding of various conditions, including A01.01 - Typhoid meningitis. Below is an overview of the changes and implications associated with this specific code:
Changes from ICD-9 to ICD-10
- In ICD-9, the code for typhoid meningitis was part of a broader category without the same level of detail. The ICD-9 code for typhoid fever was 002.0, and meningitis was coded separately, which did not allow for the combination of the two conditions.

ICD-9 vs ICD-10

The implementation of ICD-10 has had a significant impact on the coding of various conditions, including A01.01 - Typhoid meningitis. Below is an overview of the changes and implications associated with this specific code: Changes from ICD-9 to ICD-10 1. Code Structure: - In ICD-9, the code for typhoid meningitis was part of a broader category without the same level of detail. The ICD-9 code for typhoid fever was 002.0, and meningitis was coded separately, which did not allow for the combination of the two conditions. - ICD-10 introduced a more detailed alphanumeric coding system. For example, A01.01 specifically designates Typhoid meningitis, allowing for more precise identification of the condition. 2. Expanded Code Range: - The ICD-10 code set allows for a greater number of codes and combinations, reflecting a more nuanced understanding of diseases and conditions. This change enables coders to accurately capture the complexity of cases involving typhoid...

Reimbursement & Billing Impact

Reimbursement Implications

Resources

Clinical References

  • •
    CDC Typhoid Fever Information
  • •
    WHO Typhoid Guidelines

Coding & Billing References

  • •
    CDC Typhoid Fever Information
  • •
    WHO Typhoid Guidelines

Frequently Asked Questions

What distinguishes typhoid meningitis from other forms of meningitis?

Typhoid meningitis is specifically caused by Salmonella typhi and typically occurs as a complication of systemic typhoid fever, requiring both blood and CSF cultures for diagnosis.

What are the key documentation requirements for A01.01?

Documentation must include laboratory confirmation of S. typhi infection, evidence of meningeal involvement through CSF analysis, and neurological examination findings.