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Billing code

G877A

Guidance for one Botox injection

Bill G877 for EMG or ultrasound guidance to find the site of one botulinum toxin injection.

Watch for: Payable only on the same claim as G870, G873, G874 or G875; use G878 for two or more injections.

Code

G877A

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 EMG and/or ultrasound guidance to find the site of one botulinum toxin injection.

What it covers

G877 is added when EMG and/or ultrasound guidance is needed to find the injection site for one botulinum toxin injection. It is payable with G870, G873, G874 or G875 (J51).

For two or more injections, use G878 instead (J51).

Billing rules

• Payable only with G870, G873, G874 or G875 (J51).
• Other EMG or ultrasound services used to find the injection site are not payable with botulinum toxin services (J52).
• Add E543 for a disposable EMG hypodermic electrode used outside hospital, maximum one per patient per day (J51).

Often billed with

• E543 disposable EMG electrode outside hospital (J51).

Common rejections

• AD9: OHIP describes this as 'Premium not allowed alone': this add-on must be on the same claim as a payable G870, G873, G874 or G875.

Related codes: G878, E543, G875, G873, G874

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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