Billing code
G455A — EMG/nerve conduction Schedule A (complete) – technical component
Complete EMG/nerve study, technical
Bill G455 for the technical part of a complete nerve conduction and needle EMG study covering two or more nerves.
Watch for: Not payable with G471 for the same patient the same day; surface EMG is not payable.
| Provider | Specialist | Assistant | Anaesthetist | Non-anaesthetist |
|---|---|---|---|---|
| $31.80 | $0.00 | $0.00 | $0.00 | $0.00 |
- Code
- G455A
- Description
- EMG/nerve conduction Schedule A (complete) – technical component
- FHO+ basket
- Not in the FHO+ base rate basket (Schedule 2 or 2B).
- Effective date
- Apr 1, 2026
- Termination date
- No end date
Explanation
Updated October 26, 2026
Technical component of a complete nerve conduction and needle EMG study (Schedule A).
What it covers
Schedule A is the complete procedure: conduction studies on two or more nerves presumed involved in the disease, with EMG of the appropriate muscles as needed and/or detailed neuromuscular transmission studies. It includes study of normal nerve and/or the opposite side for comparison as needed (J103).
The professional component is G456 (J103).
Billing rules
- Schedules A, B, C and single fibre EMG require an intramuscular needle recording electrode. Surface EMG and other EMG techniques are not payable (J103).
- If you own the equipment and either do the test yourself or employ and supervise a technician, you can bill both the technical and professional components (J103).
- G471 (Schedule C technical) is not payable with G455 for the same patient the same day (J104).
- When rendered in a hospital, this technical component is paid at 86.10% of the listed fee (GP11).
- Not payable for a hospital in-patient, or for a patient admitted to the same hospital within 24 hours for the same condition (GP11).
- You must have the training and experience to render the technical component and keep documentation of your quality-assurance process (GP11).
Often billed with
- G456 Schedule A professional component (J103).
Common rejections
- ADH: OHIP describes this as 'Cannot be billed together': G471 and G455 can't be paid for the same patient the same day (J104).
Related codes: G456, G466, G457, G471, G473, G458
Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Physical Medicine, Needle Electromyography and Nerve Conduction Studies, page J103. Rules GP11.
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