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v1.0.0
ICD-10 Guide
ICD-10 CodesG57.12

G57.12

Billable

Meralgia paresthetica, left lower limb

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

Code Description

ICD-10 G57.12 is a billable code used to indicate a diagnosis of meralgia paresthetica, left lower limb.

Key Diagnostic Point:

Meralgia paresthetica is a condition characterized by numbness, tingling, and burning pain in the outer thigh, resulting from compression of the lateral femoral cutaneous nerve. This nerve, which is responsible for sensation in the skin over the lateral aspect of the thigh, can become entrapped due to various factors such as obesity, tight clothing, pregnancy, or prolonged sitting. The left lower limb designation indicates that the symptoms are localized to the left side. Patients often report discomfort that may worsen with activities that increase pressure on the nerve, such as sitting for extended periods or wearing tight belts. Diagnosis typically involves a thorough clinical evaluation, including a detailed history and physical examination, and may be supported by nerve conduction studies to assess the function of the lateral femoral cutaneous nerve. Treatment options include conservative measures such as weight loss, physical therapy, and avoidance of aggravating factors, with surgical intervention considered in severe cases where conservative management fails.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Specificity of the affected limb (left lower limb)
  • Differentiation from other neuropathies and nerve entrapments
  • Need for detailed documentation of symptoms and history
  • Potential overlap with other ICD-10 codes related to neuropathies

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Failure to specify the affected side
  • Misdiagnosis or coding of similar conditions
  • Lack of supporting evidence for nerve conduction studies

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including sensory and motor assessments.

Common Clinical Scenarios

Patients presenting with unilateral thigh pain and sensory disturbances.

Billing Considerations

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

Orthopedics

Documentation Requirements

Assessment of any structural abnormalities contributing to nerve compression.

Common Clinical Scenarios

Patients with obesity or post-surgical changes presenting with thigh pain.

Billing Considerations

Document any physical therapy interventions or surgical options considered.

Coding Guidelines

Inclusion Criteria

Use G57.12 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the condition, including the specific side affected
  • Include any relevant diagnostic tests performed, such as nerve conduction studies, to support the diagnosis

Exclusion Criteria

Do NOT use G57.12 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

959.9CPT Code

Nerve conduction study

Clinical Scenario

Used to confirm the diagnosis of meralgia paresthetica.

Documentation Requirements

Document the rationale for the nerve conduction study and findings.

Specialty Considerations

Neurologists should ensure comprehensive documentation of the patient's history and physical exam.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding conditions like meralgia paresthetica, enabling better tracking of prevalence and treatment outcomes. The introduction of codes for specific limbs enhances the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding conditions like meralgia paresthetica, enabling better tracking of prevalence and treatment outcomes. The introduction of codes for specific limbs enhances the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 symptoms of meralgia paresthetica?

Common symptoms include numbness, tingling, and burning pain in the outer thigh, often exacerbated by prolonged sitting or tight clothing.

How is meralgia paresthetica diagnosed?

Diagnosis is primarily clinical, supported by a detailed history, physical examination, and may include nerve conduction studies to assess the lateral femoral cutaneous nerve.

What treatments are available for meralgia paresthetica?

Treatment options include conservative measures such as weight loss, physical therapy, and avoiding aggravating factors. Surgical intervention may be considered in severe cases.