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Billing code

G485A — Chemodenervation injection – first major nerve and/or branches

Nerve injection for spasticity

Bill G485 for chemodenervation of the first major motor nerve with phenol, alcohol or similar agent to reduce focal spasticity.

Watch for: Within 30 days of a previous chemodenervation, bill G487 instead; with anaesthetic agents, bill from the nerve block listings.

Code

G485A

Description

Chemodenervation injection – first major nerve and/or branches

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

Chemodenervation (phenol, alcohol or similar) of the first major motor nerve and/or branches to reduce focal spasticity.

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).

G485 is the first major nerve and/or its branches. Each additional major nerve the same day is G486. A repeat or additional procedure within 30 days of a previous chemodenervation is G487, with G488 for each additional nerve (J105).

Billing rules

• Within 30 days of a previous chemodenervation injection, bill G487 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

• G486 each additional major nerve the same day (J105).

Related codes: G486, G487, G488, G875, G876

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

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