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ICD-10 Guide
ICD-10 CodesG57.50

G57.50

Billable

Tarsal tunnel syndrome, unspecified lower limb

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

Code Description

ICD-10 G57.50 is a billable code used to indicate a diagnosis of tarsal tunnel syndrome, unspecified lower limb.

Key Diagnostic Point:

Tarsal tunnel syndrome (TTS) is a condition characterized by compression of the tibial nerve as it passes through the tarsal tunnel, a narrow space located behind the medial malleolus of the ankle. This syndrome can lead to symptoms such as pain, tingling, numbness, and weakness in the foot and toes. The condition is often caused by various factors including trauma, swelling, or anatomical abnormalities that can compress the nerve. Patients may experience symptoms that worsen with activity and improve with rest. Diagnosis typically involves a thorough clinical examination, patient history, and may include nerve conduction studies to assess the function of the tibial nerve. Treatment options range from conservative management, such as rest and physical therapy, to surgical intervention in severe cases. Accurate coding is essential for proper reimbursement and to reflect the complexity of the condition, especially when associated with other neuropathies or nerve entrapments.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptoms and severity among patients
  • Potential overlap with other neuropathies and nerve entrapments
  • Need for precise documentation of clinical findings
  • Variations in treatment approaches and outcomes

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Failure to specify laterality when applicable
  • Misclassification of tarsal tunnel syndrome as other neuropathies
  • Lack of supporting diagnostic tests in the medical record

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including sensory and motor assessments.

Common Clinical Scenarios

Patients presenting with foot pain, numbness, or tingling, particularly after physical activity.

Billing Considerations

Ensure documentation includes the duration and severity of symptoms, as well as any previous treatments attempted.

Orthopedics

Documentation Requirements

Assessment of structural abnormalities, imaging results, and treatment plans.

Common Clinical Scenarios

Patients with a history of ankle injuries or surgeries presenting with persistent foot symptoms.

Billing Considerations

Document any anatomical variations or previous surgical interventions that may contribute to nerve compression.

Coding Guidelines

Inclusion Criteria

Use G57.50 When
  • According to ICD
  • 10 guidelines, G57
  • 50 should be used when the specific lower limb affected is not documented
  • Coders should ensure that the diagnosis is supported by clinical findings and that any related conditions are also coded appropriately

Exclusion Criteria

Do NOT use G57.50 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

64721CPT Code

Neuroplasty, tibial nerve

Clinical Scenario

Used when surgical intervention is performed for tarsal tunnel syndrome.

Documentation Requirements

Operative report detailing the procedure and indication for surgery.

Specialty Considerations

Orthopedic or neurosurgical documentation should clearly outline the need for surgical intervention.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of tarsal tunnel syndrome, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding of the condition's prevalence and management outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of tarsal tunnel syndrome, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding of the condition's prevalence and management outcomes.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    American Academy of Neurology
  • •
    American Academy of Orthopaedic Surgeons

Coding & Billing References

  • •
    American Academy of Neurology
  • •
    American Academy of Orthopaedic Surgeons

Frequently Asked Questions

What are the common symptoms of tarsal tunnel syndrome?

Common symptoms include pain, tingling, numbness, and weakness in the foot, particularly in the arch and toes. Symptoms may worsen with activity and improve with rest.

How is tarsal tunnel syndrome diagnosed?

Diagnosis typically involves a clinical examination, patient history, and may include nerve conduction studies to assess the function of the tibial nerve.

What treatment options are available for tarsal tunnel syndrome?

Treatment options range from conservative management, such as rest and physical therapy, to surgical intervention in severe cases.