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Billing code

G486A — Chemodenervation injection – each additional major nerve, same day

Spasticity injection, extra nerve

Bill G486 with G485 for each additional major motor nerve treated by chemodenervation the same day.

Watch for: It must be on the same claim as a payable G485; for repeats within 30 days use G487 and G488.

Code

G486A

Description

Chemodenervation injection – each additional major nerve, same day

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 to G485 for chemodenervation of each additional major motor nerve and/or branches the same day.

What it covers

Chemodenervation is an injection of an individual peripheral motor nerve with phenol, ethyl alcohol or a similar non-anaesthetic chemical agent to reduce focal spasticity. It may include EMG guidance of the injection(s) (J105).

G486 is added to G485 for each additional major nerve and/or its branches the same day (J105).

Billing rules

• Add-on to G485 (J105).
• For repeat procedures within 30 days, use G487 and G488 instead (J105).
• If anaesthetic agents are used instead of phenol, alcohol or similar agents, bill from the nerve block listings (J105).
• A chemodenervation injection into the same muscle on the same day as botulinum toxin is insured but paid at nil (J105).

Often billed with

• G485 first major nerve (J105).

Common rejections

• AD9: OHIP describes this as 'Premium not allowed alone': this add-on must be on the same claim as a payable G485.

Related codes: G485, G487, G488, G875

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Physical Medicine, Chemodenervation Injection, page J105.

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