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G457
G457 – Professional component for limited EMG/NCS procedure
OHIP Diagnostic and Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits
Professional component of a limited electromyography (EMG) and/or nerve conduction studies (NCS), as described in Schedule B. This is a limited procedure involving conduction studies on a single nerve (motor and/or sensory conduction) and/or limited EMG studies of the involved muscle(s) and/or a limited neuromuscular transmission study. The procedure must be performed using intramuscular placement of a recording needle electrode; claims for surface EMG or other EMG techniques are not eligible for payment. The nerve conduction study component involves direct electrical stimulation of the relevant peripheral nerve(s) with corresponding measurement(s) of evoked latency, conduction velocity, and amplitude using surface or percutaneous recording electrodes. Additional recordings, such as late responses or reflexes, are included in the service if rendered.
Referral requiredFrom: Physician, NursePractitioner
A permanent record of the procedure must be maintained in the patient chart.
If a physician owns the EMG/NCS equipment and either employs and provides clinical supervision for a technician to perform the procedure or performs the procedure personally, then both the technical component (G466) and the professional component (G457) are payable to the physician.
Schedule B procedures refer to procedures performed using intramuscular placement of a recording needle electrode. Claims for surface EMG or other EMG techniques are not eligible for payment.
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