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ICD-10 Guide
ICD-10 CodesG56.8

G56.8

Billable

Other specified mononeuropathies of upper limb

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

Code Description

ICD-10 G56.8 is a billable code used to indicate a diagnosis of other specified mononeuropathies of upper limb.

Key Diagnostic Point:

G56.8 refers to other specified mononeuropathies affecting the upper limb, which can include a variety of conditions that impact the peripheral nerves in the arm, hand, and shoulder. These neuropathies can arise from various causes, including trauma, repetitive strain, or systemic diseases. Common examples include ulnar nerve entrapment at the elbow (cubital tunnel syndrome), radial nerve palsy, and median nerve compression (carpal tunnel syndrome). Symptoms often include pain, numbness, tingling, and weakness in the affected areas. Diagnosis typically involves a thorough clinical examination, patient history, and may include nerve conduction studies (NCS) to assess the electrical activity of the nerves. These studies help differentiate between various types of neuropathies and guide treatment options, which may include physical therapy, medication, or surgical intervention. 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 mononeuropathies
  • Overlap with other neuropathy codes
  • Need for detailed documentation of symptoms and diagnostic tests
  • Potential for multiple nerve involvement

Audit Risk Factors

  • Insufficient documentation of symptoms
  • Lack of clear diagnostic testing results
  • Inconsistent coding of related conditions
  • Failure to specify the affected nerve

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 numbness and tingling in the hand, weakness in grip strength, or pain radiating from the shoulder to the arm.

Billing Considerations

Neurologists must ensure that all relevant diagnostic tests are documented to support the chosen code.

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Patients with repetitive strain injuries leading to nerve compression or those requiring surgical intervention for nerve entrapment.

Billing Considerations

Orthopedic surgeons should document the specific nerve involved and the surgical procedure performed.

Coding Guidelines

Inclusion Criteria

Use G56.8 When
  • According to ICD
  • 10 guidelines, G56
  • 8 should be used when the specific mononeuropathy is not classified elsewhere
  • Coders must ensure that the documentation supports the diagnosis and that other related codes are not more appropriate

Exclusion Criteria

Do NOT use G56.8 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

95903CPT Code

Nerve conduction study, motor and sensory

Clinical Scenario

Used to evaluate the function of the affected nerve in patients with suspected mononeuropathy.

Documentation Requirements

Document the specific nerves tested and the results of the study.

Specialty Considerations

Neurologists should ensure that the rationale for the study is clearly documented.

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 accuracy of diagnoses and treatment plans. G56.8 provides a means to capture conditions that do not fit neatly into other categories, enhancing data collection and analysis.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mononeuropathies, improving the accuracy of diagnoses and treatment plans. G56.8 provides a means to capture conditions that do not fit neatly into other categories, enhancing data collection and analysis.

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 upper limb?

Common causes include repetitive strain injuries, trauma, systemic diseases like diabetes, and anatomical variations that lead to nerve compression.

How can nerve conduction studies assist in diagnosing G56.8?

Nerve conduction studies measure the electrical activity of nerves, helping to confirm the diagnosis of mononeuropathies by identifying areas of nerve damage or dysfunction.