Summary & Overview
CPT 95927: Short-Latency Somatosensory Evoked Potential Study
CPT code 95927 denotes a short–latency somatosensory evoked potential (SSEP) study in which peripheral nerves or skin sites in the trunk or head are stimulated and resulting central nervous system responses are recorded. This neurodiagnostic procedure is used to evaluate integrity of somatosensory pathways and has national relevance for preoperative monitoring, neurologic diagnosis, and functional assessment. Reimbursement and clinical documentation for 95927 affect hospitals, ambulatory surgical centers, and neurodiagnostic laboratories.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides payor coverage summaries and benchmark context across these major national payers to inform clinical billing teams and revenue cycle managers.
Readers will learn the clinical scope of the procedure, typical settings where 95927 is performed, common billing modifiers and practical service-line considerations. The report presents benchmark payment context, coding guidance highlights, and policy updates affecting neurodiagnostic services. Where input data is incomplete, the publication notes "Data not available in the input." The focus is national in scope and intended to support operational and coding accuracy for providers who perform somatosensory evoked potential testing.
Billing Code Overview
CPT code 95927 describes a short–latency somatosensory evoked potential study in which the provider stimulates peripheral nerves or skin sites in the trunk or head and records the resulting evoked potentials from the central nervous system. This procedure assesses neural pathway function by measuring electrical responses generated within the central nervous system after peripheral stimulation.
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Service type: Neurodiagnostic testing — somatosensory evoked potentials (short latency)
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Typical site of service: Hospital outpatient departments, ambulatory surgical centers, and specialized neurodiagnostic laboratories where electrodiagnostic testing is performed.
Clinical & Coding Specifications
Clinical Context
A 48-year-old patient presents to a neurodiagnostic laboratory for evaluation of suspected spinal cord dysfunction after a recent traumatic fall with new-onset lower extremity numbness and gait instability. The ordering neurologist requests a short-latency somatosensory evoked potential study to assess integrity of the dorsal columns and central somatosensory pathways. The technologist applies stimulating electrodes to a peripheral nerve or trunk/cranial skin site (for example, tibial or median nerve for limb studies or posterior tibial/neck stimulation for trunk/head sites) and records cortical and subcortical responses using scalp and spinal recording leads. The study workflow includes patient identification and consent verification, electrode placement and impedance check, stimulation parameter setup, baseline recording, repeated trials to ensure reproducibility, interpretation by a board-certified neurologist or neurophysiologist, and documentation of findings in the medical record. The procedure is performed in an outpatient neurodiagnostic suite or inpatient neurology unit, often coordinated with imaging or intraoperative monitoring when indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Used when billing only the physician interpretation and report for the study performed by the neurologist or neurophysiologist. |