What is OHIP billing code G455?

G455 is "Schedule A - technical component", an OHIP Diagnostic and Therapeutic Procedures code from the Ontario Schedule of Benefits (Physician Services).

How much does G455 pay?

The current OHIP fee for G455 is $31.80, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill G455 to OHIP?

G455 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates G455 claims against the Schedule of Benefits rules before submission.

What codes are related to G455?

Codes related to G455 in the Schedule of Benefits include G456, G466, G457.

All codes

G455

G455 – Schedule A - technical component

OHIP Diagnostic and Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits

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This fee code represents the technical component of a complete electromyography (EMG) and nerve conduction study procedure (Schedule A). The service involves conduction studies on two or more nerves presumed to be involved in a disease process, along with EMG studies of appropriate muscles and/or detailed studies of neuromuscular transmission as necessary. It also includes comparative studies of a normal nerve or the opposite side if needed. This procedure must be performed using intramuscular placement of a recording needle electrode. A permanent record of the procedure, including measurements of evoked latency, conduction velocity, and amplitude, must be maintained in the patient's chart.

Referral requiredFrom: Physician, NursePractitioner, DentalSurgeon

A permanent record of the procedure must be maintained in the patient chart.

G456 G466 G457

This is the technical component of a Schedule A procedure, paired with the professional component G456.

When patients are referred directly for this test, a consultation or assessment by the diagnostic physician is not payable unless a medically necessary consultation or assessment is specifically requested by the referring provider.

If a physician owns the EMG/NCS equipment and employs and supervises a technician, the technical component is payable to the physician.

The procedure must use intramuscular placement of a recording needle electrode. Surface EMG or other techniques are not eligible for payment.

A nerve conduction study includes measuring evoked latency, conduction velocity, and amplitude. Additional recordings like late responses or reflexes are included in the service if rendered.

A permanent record of the procedure must be maintained.

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