Summary & Overview
HCPCS G8406: Not Eligible for Lower Extremity Neurological Exam
HCPCS Level II code G8406 is used when a clinician documents that a patient is not an eligible candidate for the lower extremity neurological exam measure. The code captures an eligibility determination for a quality/performance metric rather than a billable treatment procedure. Nationally, proper use of this code affects quality reporting, performance measurement, and administrative records for outpatient and ambulatory care providers.
Key payers relevant to guidance and coverage include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find context on the code’s purpose in quality documentation, typical sites of service where it is recorded, and implications for reporting to major payers. The publication also outlines benchmarks and policy updates related to measure reporting, clarifies clinical contexts in which the code is expected to appear, and identifies common implementation considerations for administrative teams.
This summary addresses the code’s role in quality measurement systems and reporting workflows at a national level, helping clinicians, coders, and compliance staff understand when G8406 is the appropriate designation and what topics to review further in payer-specific guidance and quality reporting resources.
Billing Code Overview
HCPCS Level II code G8406 documents that the clinician recorded the patient was not an eligible candidate for the lower extremity neurological exam measure. This entry indicates the clinician assessed eligibility for a specific performance measure related to lower extremity neurological examination and determined the patient did not meet criteria for that measure.
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Service type: Clinical documentation of eligibility determination for a performance/quality measure
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Typical site of service: Outpatient clinic or other ambulatory care settings where performance measures and quality reporting are recorded
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Clinical & Coding Specifications
Clinical Context
A typical patient is a 68-year-old with advanced lower-extremity amputation, severe dementia, or bilateral lower-extremity paralysis presenting to a primary care clinic, neurology, or physical medicine and rehabilitation practice for diabetes foot care or neuropathy management. During the visit the clinician documents review of systems, focused neurologic history, and attempted exam components. The clinician determines that the patient is not an eligible candidate for the lower extremity neurological exam measure because the patient has bilateral lower extremity amputation above the ankle, an acute lower-extremity cast or external fixation preventing sensory testing, or cognitive impairment that precludes reliable exam responses. The clinician documents the medical reason for non-eligibility, the pertinent physical findings (or inability to perform), and the clinical decision-making supporting the exclusion. Documentation is entered into the encounter note and coded with the appropriate HCPCS Level II code G8406 to indicate that the patient was not eligible for the lower extremity neurological exam measure.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when services are significantly greater than typical for the visit when documenting additional complexity beyond the non-eligibility determination |