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ICD-10 Guide
ICD-10 CodesG56.00

G56.00

Billable

Carpal tunnel syndrome, unspecified upper limb

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

Code Description

ICD-10 G56.00 is a billable code used to indicate a diagnosis of carpal tunnel syndrome, unspecified upper limb.

Key Diagnostic Point:

Carpal tunnel syndrome (CTS) is a common condition caused by compression of the median nerve as it travels through the carpal tunnel in the wrist. This syndrome is characterized by symptoms such as numbness, tingling, and weakness in the hand and fingers, particularly affecting the thumb, index, middle, and part of the ring finger. The condition can arise from various factors, including repetitive wrist movements, wrist injuries, and certain medical conditions like diabetes and hypothyroidism. Diagnosis typically involves a thorough clinical examination, patient history, and may include nerve conduction studies (NCS) to assess the function of the median nerve. These studies help confirm the diagnosis by measuring the speed of electrical impulses through the nerve, which can be slowed in cases of entrapment. Treatment options range from conservative measures, such as splinting and corticosteroid injections, to surgical intervention in more severe cases. Accurate coding is essential for proper reimbursement and to reflect the patient's condition in medical records.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptoms and severity among patients
  • Need for comprehensive documentation to support diagnosis
  • Potential for overlapping symptoms with other neuropathies
  • Variations in treatment approaches and their documentation

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Failure to include nerve conduction study results
  • Misidentification of the affected limb
  • Inconsistent use of related codes for co-existing conditions

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including sensory and motor assessments.

Common Clinical Scenarios

Patients presenting with numbness and tingling in the hand, particularly after repetitive activities.

Billing Considerations

Ensure nerve conduction study results are documented and correlate with clinical findings.

Orthopedics

Documentation Requirements

Surgical notes if surgery is performed, including pre-operative assessments and post-operative care.

Common Clinical Scenarios

Patients requiring surgical intervention for severe carpal tunnel syndrome.

Billing Considerations

Document the rationale for surgical intervention and any conservative treatments attempted.

Coding Guidelines

Inclusion Criteria

Use G56.00 When
  • Follow the official ICD
  • CM guidelines for coding and reporting, ensuring that the diagnosis is supported by clinical documentation
  • 00 should be used when the specific limb affected is not documented

Exclusion Criteria

Do NOT use G56.00 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95905CPT Code

Nerve conduction studies

Clinical Scenario

Used to confirm diagnosis of carpal tunnel syndrome.

Documentation Requirements

Document the specific nerves tested and results.

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 carpal tunnel syndrome, improving the accuracy of patient records and reimbursement processes. G56.00 provides a general classification, but specificity is encouraged for better clinical outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of carpal tunnel syndrome, improving the accuracy of patient records and reimbursement processes. G56.00 provides a general classification, but specificity is encouraged for better clinical outcomes.

Reimbursement & Billing Impact

reimbursement processes. G56.00 provides a general classification, but specificity is encouraged for better clinical outcomes.

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 is the primary symptom of carpal tunnel syndrome?

The primary symptom is numbness and tingling in the hand, particularly in the thumb, index, and middle fingers.

How is carpal tunnel syndrome diagnosed?

Diagnosis is typically made through clinical evaluation and confirmed with nerve conduction studies.