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v1.0.0
ICD-10 Guide
ICD-10 CodesG61.9

G61.9

Billable

Inflammatory polyneuropathy, unspecified

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

Code Description

ICD-10 G61.9 is a billable code used to indicate a diagnosis of inflammatory polyneuropathy, unspecified.

Key Diagnostic Point:

Inflammatory polyneuropathy refers to a group of disorders characterized by inflammation of the peripheral nerves, leading to symptoms such as weakness, numbness, and pain. This condition can arise from various etiologies, including autoimmune diseases, infections, and toxic exposures. The unspecified designation indicates that the specific cause of the inflammatory polyneuropathy has not been determined or documented. Clinically, patients may present with symmetrical weakness, sensory disturbances, and autonomic dysfunction. Diagnosis often involves a combination of clinical evaluation, laboratory tests, and electrodiagnostic studies, which assess the electrical activity of nerves and muscles. These studies can help differentiate inflammatory polyneuropathy from other neuropathies, such as diabetic or hereditary forms. Treatment typically focuses on addressing the underlying cause, managing symptoms, and may include corticosteroids or immunotherapy. Accurate coding is essential for proper reimbursement and to reflect the complexity of the patient's condition.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying causes
  • Need for comprehensive clinical documentation
  • Differentiation from other neuropathies
  • Potential for overlapping symptoms with other conditions

Audit Risk Factors

  • Insufficient documentation of clinical findings
  • Lack of clear diagnostic criteria
  • Inadequate differentiation from other neuropathies
  • Failure to document treatment plans

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, results of electrodiagnostic studies, and treatment plans.

Common Clinical Scenarios

Patients presenting with progressive weakness, sensory loss, or pain without a clear etiology.

Billing Considerations

Ensure comprehensive documentation of symptoms and diagnostic tests to support the use of G61.9.

Rheumatology

Documentation Requirements

History of autoimmune diseases, laboratory results indicating inflammatory markers, and treatment response.

Common Clinical Scenarios

Patients with known autoimmune conditions presenting with new neurological symptoms.

Billing Considerations

Document the relationship between autoimmune conditions and neuropathy to justify the diagnosis.

Coding Guidelines

Inclusion Criteria

Use G61.9 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when the specific cause of inflammatory polyneuropathy is not documented
  • Include all relevant clinical information to support the diagnosis

Exclusion Criteria

Do NOT use G61.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95900CPT Code

Nerve conduction studies

Clinical Scenario

Used to evaluate the extent of nerve damage in suspected inflammatory polyneuropathy.

Documentation Requirements

Document the specific nerves tested and the findings.

Specialty Considerations

Neurologists should ensure that the rationale for testing aligns with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of inflammatory polyneuropathies, improving the granularity of data collection and reimbursement processes. G61.9 provides a means to capture cases where the etiology is not yet determined, which was less clearly defined in ICD-9.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of inflammatory polyneuropathies, improving the granularity of data collection and reimbursement processes. G61.9 provides a means to capture cases where the etiology is not yet determined, which was less clearly defined in ICD-9.

Reimbursement & Billing Impact

reimbursement processes. G61.9 provides a means to capture cases where the etiology is not yet determined, which was less clearly defined in ICD-9.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

When should I use G61.9?

Use G61.9 when a patient presents with symptoms of inflammatory polyneuropathy, but the specific cause has not been identified or documented. Ensure that all clinical findings and diagnostic efforts are well-documented.