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ICD-10 Guide
ICD-10 CodesG57.8

G57.8

Billable

Other specified mononeuropathies of lower limb

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

Code Description

ICD-10 G57.8 is a billable code used to indicate a diagnosis of other specified mononeuropathies of lower limb.

Key Diagnostic Point:

G57.8 refers to other specified mononeuropathies affecting the lower limb, which are conditions characterized by damage or dysfunction of a single peripheral nerve. These neuropathies can arise from various causes, including trauma, compression, or systemic diseases. Common examples include peroneal nerve palsy, tarsal tunnel syndrome, and other entrapment syndromes. Symptoms may include pain, weakness, numbness, or tingling in the affected area, which can significantly impact mobility and quality of life. Diagnosis often involves a thorough clinical examination, patient history, and may include nerve conduction studies to assess the function of the affected nerve. Treatment options vary based on the underlying cause and may include physical therapy, medications for pain relief, or surgical intervention to relieve nerve compression. 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 mononeuropathy
  • Need for detailed clinical documentation to specify the type of neuropathy
  • Potential overlap with other neuropathy codes
  • Variability in symptoms and severity among patients

Audit Risk Factors

  • Insufficient documentation of the specific type of neuropathy
  • Failure to include nerve conduction study results
  • Inconsistent clinical findings in the medical record
  • Lack of clear correlation between symptoms and diagnosis

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, results of nerve conduction studies, and patient history.

Common Clinical Scenarios

Patients presenting with unilateral leg weakness, numbness, or pain; post-surgical nerve injuries.

Billing Considerations

Ensure that the documentation clearly specifies the affected nerve and the underlying cause.

Orthopedics

Documentation Requirements

Surgical notes, imaging studies, and pre-operative assessments.

Common Clinical Scenarios

Patients with nerve entrapment syndromes due to anatomical abnormalities or trauma.

Billing Considerations

Document any surgical interventions performed to relieve nerve compression.

Coding Guidelines

Inclusion Criteria

Use G57.8 When
  • According to ICD
  • 10 coding guidelines, G57
  • 8 should be used when the specific type of mononeuropathy affecting the lower limb is documented but does not fall under more specific codes
  • Ensure that the documentation supports the diagnosis and includes any relevant test results

Exclusion Criteria

Do NOT use G57.8 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95900CPT Code

Nerve conduction studies

Clinical Scenario

Used to confirm the diagnosis of mononeuropathy.

Documentation Requirements

Document the specific nerves tested and the results.

Specialty Considerations

Neurologists should ensure that the studies are performed according to established protocols.

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 ability to capture the nuances of these conditions. G57.8 provides a means to document cases that do not fit neatly into other categories, enhancing the accuracy of patient records and reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mononeuropathies, improving the ability to capture the nuances of these conditions. G57.8 provides a means to document cases that do not fit neatly into other categories, enhancing the accuracy of patient records and reimbursement.

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 in the lower limb?

Common causes include trauma, compression from surrounding structures, systemic diseases such as diabetes, and repetitive stress injuries.

How can nerve conduction studies assist in diagnosing G57.8?

Nerve conduction studies measure the electrical activity of nerves and can help determine the presence and extent of nerve damage, confirming the diagnosis of mononeuropathy.