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ICD-10 Guide
ICD-10 CodesG51.1

G51.1

Billable

Geniculate ganglionitis

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

Code Description

ICD-10 G51.1 is a billable code used to indicate a diagnosis of geniculate ganglionitis.

Key Diagnostic Point:

Geniculate ganglionitis is an inflammatory condition affecting the geniculate ganglion, which is part of the facial nerve (cranial nerve VII). This condition is characterized by the inflammation of the ganglion, leading to symptoms such as facial pain, altered taste sensation, and potential facial weakness. The geniculate ganglion is located in the temporal bone and plays a crucial role in transmitting sensory information from the face and taste sensations from the anterior two-thirds of the tongue. Patients may present with unilateral symptoms, and the condition can be associated with viral infections, particularly herpes simplex virus. Diagnosis typically involves clinical evaluation, and may be supported by imaging studies or nerve conduction studies to assess the function of the facial nerve. Treatment often includes corticosteroids to reduce inflammation and manage symptoms. Understanding the underlying pathophysiology and clinical presentation is essential for accurate coding and management of this condition.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of cranial nerve anatomy and function
  • Differentiation from other facial nerve disorders
  • Potential overlap with other neuropathies
  • Need for precise documentation of symptoms and clinical findings

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings
  • Misdiagnosis or coding of similar conditions
  • Failure to document the relationship between symptoms and the geniculate ganglion
  • Lack of supporting diagnostic tests in the medical record

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including sensory and motor function assessments.

Common Clinical Scenarios

Patients presenting with unilateral facial pain and sensory changes.

Billing Considerations

Documentation should clearly outline the neurological assessment and any imaging or nerve conduction studies performed.

Otolaryngology

Documentation Requirements

Thorough history of symptoms, including onset, duration, and associated factors.

Common Clinical Scenarios

Patients with facial pain and taste disturbances, particularly post-viral infection.

Billing Considerations

Consideration of differential diagnoses such as Bell's palsy or other cranial nerve disorders.

Coding Guidelines

Inclusion Criteria

Use G51.1 When
  • According to ICD
  • 10 guidelines, G51
  • 1 should be used when there is clear documentation of geniculate ganglion involvement with associated symptoms

Exclusion Criteria

Do NOT use G51.1 When
  • Exclusion criteria include conditions that do not involve inflammation of the ganglion or are better classified under other neuropathies

Related ICD-10 Codes

Related CPT Codes

95870CPT Code

Nerve conduction studies

Clinical Scenario

Used to assess facial nerve function in patients with suspected geniculate ganglionitis.

Documentation Requirements

Document the rationale for nerve conduction studies and findings.

Specialty Considerations

Neurology specialists should ensure comprehensive documentation of nerve function assessments.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like geniculate ganglionitis, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding the epidemiology of cranial nerve disorders.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like geniculate ganglionitis, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding the epidemiology of cranial nerve disorders.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like geniculate ganglionitis, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better understanding the epidemiology of cranial nerve disorders.

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 geniculate ganglionitis?

Common symptoms include unilateral facial pain, altered taste sensation, and potential facial weakness, often following a viral infection.