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ICD-10 Guide
ICD-10 CodesChapter 6: Diseases of the nervous systemG61

G61

Billable

Inflammatory polyneuropathy

Chapter 6:Diseases of the nervous system

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

Code Description

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

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 most common form is Guillain-Barré syndrome (GBS), which often follows a respiratory or gastrointestinal infection. Patients may present with rapidly progressive weakness, often starting in the legs and ascending to the upper body. Diagnosis typically involves clinical evaluation, nerve conduction studies, and lumbar puncture to assess cerebrospinal fluid (CSF) for elevated protein levels. Treatment may include immunotherapy, such as intravenous immunoglobulin (IVIG) or plasmapheresis, aimed at reducing the immune response. The prognosis varies, with many patients experiencing significant recovery, although some may have residual symptoms. Accurate coding is essential for appropriate management and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes (autoimmune, infectious, toxic)
  • Overlap with other neuropathic conditions
  • Need for comprehensive clinical documentation
  • Potential for misdiagnosis with similar symptoms

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to specify the type of inflammatory polyneuropathy
  • Misclassification of the condition as a non-inflammatory neuropathy
  • Lack of supporting diagnostic tests (e.g., nerve conduction studies)

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, results of electrodiagnostic studies, and any relevant laboratory tests.

Common Clinical Scenarios

Patients presenting with acute onset of weakness, sensory changes, or pain following an infection.

Billing Considerations

Ensure that the documentation clearly differentiates between inflammatory and non-inflammatory neuropathies.

Physical Medicine and Rehabilitation

Documentation Requirements

Functional assessments, treatment plans, and progress notes detailing rehabilitation efforts.

Common Clinical Scenarios

Patients requiring rehabilitation post-acute inflammatory polyneuropathy for recovery of strength and function.

Billing Considerations

Document the extent of functional impairment and the impact on daily living activities.

Coding Guidelines

Inclusion Criteria

Use G61 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the clinical picture, including the onset, duration, and severity of symptoms
  • Include results from electrodiagnostic studies and any relevant laboratory findings

Exclusion Criteria

Do NOT use G61 When
No specific exclusions found.

Related CPT Codes

95900CPT Code

Nerve conduction studies

Clinical Scenario

Used to confirm diagnosis of inflammatory polyneuropathy.

Documentation Requirements

Document the specific nerves tested and the findings.

Specialty Considerations

Neurologists should ensure that the studies are interpreted in the context of 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 accuracy of data collection and reimbursement processes. It has also facilitated better tracking of epidemiological trends and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of inflammatory polyneuropathies, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of epidemiological trends and treatment outcomes.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of epidemiological trends and treatment outcomes.

Resources

Clinical References

  • •
    American Academy of Neurology

Coding & Billing References

  • •
    American Academy of Neurology

Frequently Asked Questions

What are the common symptoms of inflammatory polyneuropathy?

Common symptoms include weakness, numbness, tingling, and pain, often starting in the legs and potentially ascending to the upper body.

How is inflammatory polyneuropathy diagnosed?

Diagnosis typically involves a combination of clinical evaluation, nerve conduction studies, and lumbar puncture to assess cerebrospinal fluid.