< Billing codes

Billing code

E543A

Office EMG electrode add-on

Add to G877 or G878 for a disposable EMG hypodermic electrode used outside hospital to guide botulinum toxin injection.

Watch for: Must be billed with G877 or G878, outside hospital only, one per patient per day.

Code

E543A

FHO+ basket

Not in the FHO+ base rate basket (Schedule 2 or 2B).

Effective date

Apr 1, 2025

Termination date

No end date

Explanation

Updated October 26, 2026

Add-on for a disposable EMG hypodermic electrode used outside hospital with botulinum toxin injection guidance.

What it covers

E543 is added to G877 or G878 for the use of a disposable EMG hypodermic electrode outside hospital during EMG-guided botulinum toxin injection (J51).

Billing rules

• Payable only with G877 or G878 (J51).
• Only for use outside hospital (J51).
• Maximum one per patient per day (J51).

Often billed with

• G877 or G878 EMG/ultrasound guidance (J51).

Common rejections

• AD9: OHIP describes this as 'Premium not allowed alone': this add-on must be on the same claim as a payable G877 or G878.

Related codes: G877, G878, G875, G876

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Injections or Infusions, Botulinum Toxin Services, page J51. Payment rules J52.

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