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ICD-10 Guide
ICD-10 CodesR94.130

R94.130

Abnormal response to nerve stimulation, unspecified

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R94.130 is a billable code used to indicate a diagnosis of abnormal response to nerve stimulation, unspecified.

Key Diagnostic Point:

R94.130 is used to classify cases where a patient exhibits an abnormal response to nerve stimulation, but the specific nature of the abnormality is not further specified. This can include a variety of symptoms such as altered sensory perception, abnormal reflexes, or unexpected muscle responses during diagnostic testing. The abnormal response may indicate underlying neurological conditions, peripheral nerve damage, or systemic diseases affecting nerve function. Common causes include neuropathies, myopathies, or central nervous system disorders. The clinical context often requires a thorough neurological examination and may involve additional diagnostic tests such as electromyography (EMG) or nerve conduction studies (NCS) to elucidate the underlying cause. Accurate coding necessitates comprehensive documentation of the patient's symptoms, the context of the nerve stimulation test, and any relevant findings from the clinical examination.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation of abnormal responses
  • Need for comprehensive documentation to support the diagnosis
  • Potential overlap with other neurological codes
  • Requirement for differential diagnosis to rule out other conditions

Audit Risk Factors

  • Insufficient documentation of the clinical findings
  • Failure to specify the context of nerve stimulation tests
  • Inconsistent coding practices across different providers
  • Lack of clarity in the patient's neurological assessment

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, neurological examination findings, and results from nerve stimulation tests.

Common Clinical Scenarios

Patients presenting with unexplained sensory changes or weakness requiring nerve conduction studies.

Billing Considerations

Ensure that all relevant symptoms and test results are documented to support the diagnosis.

Emergency Medicine

Documentation Requirements

Acute care documentation including immediate assessment findings and any interventions performed.

Common Clinical Scenarios

Patients with acute neurological deficits or altered mental status requiring rapid evaluation.

Billing Considerations

Document the urgency of the situation and any immediate treatments provided.

Coding Guidelines

Inclusion Criteria

Use R94.130 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when the abnormal response is not classified elsewhere
  • Document the clinical rationale for using this code, including any relevant test results

Exclusion Criteria

Do NOT use R94.130 When
No specific exclusions found.

Related CPT Codes

95900CPT Code

Nerve conduction studies

Clinical Scenario

Used to evaluate abnormal responses in nerve stimulation tests.

Documentation Requirements

Document the specific nerves tested and the findings.

Specialty Considerations

Ensure that the procedure is linked to the clinical findings justifying the need for testing.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of abnormal responses to nerve stimulation, but it has also introduced complexity due to the need for detailed documentation and differentiation from other neurological conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of abnormal responses to nerve stimulation, but it has also introduced complexity due to the need for detailed documentation and differentiation from other neurological conditions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of abnormal responses to nerve stimulation, but it has also introduced complexity due to the need for detailed documentation and differentiation from other neurological conditions.

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 should be documented to support the use of R94.130?

Document the patient's symptoms, the context of the nerve stimulation test, and any relevant findings from the neurological examination and diagnostic tests.