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ICD-10 Guide
ICD-10 CodesChapter 6: Diseases of the nervous systemG58

G58

Billable

Other mononeuropathies

Chapter 6:Diseases of the nervous system

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

Code Description

ICD-10 G58 is a billable code used to indicate a diagnosis of other mononeuropathies.

Key Diagnostic Point:

Mononeuropathies refer to conditions affecting a single nerve or a group of nerves, leading to sensory, motor, or autonomic dysfunction. The ICD-10 code G58 encompasses various types of mononeuropathies that do not fall under more specific categories. Common causes include trauma, compression, or systemic diseases such as diabetes. Cranial nerve disorders, such as Bell's palsy (facial nerve), and nerve entrapments, like carpal tunnel syndrome (median nerve), are prevalent examples. Symptoms may include pain, weakness, numbness, or tingling in the affected area. Diagnosis often involves clinical evaluation, nerve conduction studies (NCS), and electromyography (EMG) to assess nerve function and identify the site of injury or compression. Treatment may involve physical therapy, medications, or surgical intervention, depending on the underlying cause and severity of the neuropathy. 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 underlying causes leading to mononeuropathies
  • Overlap with other neuropathy codes
  • Need for detailed clinical documentation
  • Potential for misdiagnosis with similar conditions

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Failure to specify the affected nerve
  • Misuse of G58 when a more specific code is applicable
  • Lack of supporting diagnostic tests like NCS or EMG

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including sensory and motor assessments.

Common Clinical Scenarios

Patients presenting with unilateral weakness, numbness, or pain in a specific limb.

Billing Considerations

Ensure documentation includes the specific nerve affected and any diagnostic tests performed.

Orthopedics

Documentation Requirements

Surgical notes, imaging results, and physical examination findings.

Common Clinical Scenarios

Patients with nerve entrapment syndromes requiring surgical intervention.

Billing Considerations

Document the surgical procedure and any pre-operative assessments to support coding.

Coding Guidelines

Inclusion Criteria

Use G58 When
  • According to ICD
  • 10 guidelines, G58 should be used when the mononeuropathy does not fit into more specific categories
  • Coders must ensure that the documentation supports the diagnosis and that the condition is not a result of systemic diseases that have their own codes

Exclusion Criteria

Do NOT use G58 When
No specific exclusions found.

Related CPT Codes

95903CPT Code

Nerve conduction study, each nerve

Clinical Scenario

Used to evaluate the function of the affected nerve in cases of suspected mononeuropathy.

Documentation Requirements

Document the specific nerves tested and the results of the study.

Specialty Considerations

Neurologists should ensure that the rationale for the study is clearly documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mononeuropathies, improving the accuracy of diagnoses and treatment plans. G58 provides a broader category for conditions that do not fit neatly into other classifications, allowing for better tracking and management of these conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mononeuropathies, improving the accuracy of diagnoses and treatment plans. G58 provides a broader category for conditions that do not fit neatly into other classifications, allowing for better tracking and management of these conditions.

Reimbursement & Billing Impact

reimbursement.

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

What are the common causes of mononeuropathies?

Common causes include trauma, repetitive strain injuries, systemic diseases like diabetes, infections, and compression syndromes.

How do nerve conduction studies assist in diagnosing mononeuropathies?

Nerve conduction studies measure the speed and strength of signals traveling in the nerves, helping to identify the location and extent of nerve damage.