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ICD-10 Guide
ICD-10 CodesG57.22

G57.22

Billable

Lesion of femoral nerve, left lower limb

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

Code Description

ICD-10 G57.22 is a billable code used to indicate a diagnosis of lesion of femoral nerve, left lower limb.

Key Diagnostic Point:

A lesion of the femoral nerve in the left lower limb can result from various etiologies, including trauma, compression, or systemic diseases such as diabetes mellitus. The femoral nerve is responsible for innervating the quadriceps muscle, which is crucial for knee extension, as well as providing sensation to the anterior thigh and part of the medial leg. Symptoms may include weakness in knee extension, loss of sensation in the anterior thigh, and potential atrophy of the quadriceps muscle. Diagnosis typically involves a thorough clinical examination, nerve conduction studies, and imaging studies to identify the underlying cause of the nerve lesion. Treatment may include physical therapy, pain management, and in some cases, surgical intervention to relieve compression or repair the nerve. Accurate coding is essential for appropriate reimbursement and to reflect the complexity of the patient's condition.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between various types of nerve lesions
  • Understanding the anatomical implications of the femoral nerve
  • Identifying the underlying causes of the lesion
  • Documenting associated symptoms and functional impairments

Audit Risk Factors

  • Inadequate documentation of the lesion's cause
  • Failure to specify laterality (left vs. right)
  • Misclassification of the type of nerve injury
  • Lack of supporting diagnostic tests in the medical record

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including motor and sensory assessments.

Common Clinical Scenarios

Patients presenting with weakness in knee extension or sensory loss in the anterior thigh.

Billing Considerations

Ensure that nerve conduction studies are documented to support the diagnosis.

Orthopedics

Documentation Requirements

Surgical notes if applicable, imaging studies, and physical examination findings.

Common Clinical Scenarios

Post-traumatic nerve injuries or compression syndromes requiring surgical intervention.

Billing Considerations

Document any surgical procedures performed to address the nerve lesion.

Coding Guidelines

Inclusion Criteria

Use G57.22 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include details about the nature of the lesion and any associated conditions

Exclusion Criteria

Do NOT use G57.22 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95900CPT Code

Nerve conduction studies, each nerve

Clinical Scenario

Used to evaluate the function of the femoral nerve in patients with suspected lesions.

Documentation Requirements

Document the specific nerves tested and the findings.

Specialty Considerations

Neurologists should ensure that the rationale for testing is clearly stated.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of nerve lesions, improving the accuracy of diagnoses and facilitating better patient management and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of nerve lesions, improving the accuracy of diagnoses and facilitating better patient management 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 causes of a femoral nerve lesion?

Common causes include trauma, compression from tumors, surgical complications, and systemic diseases such as diabetes mellitus.