G123for each additional one (to a maximum of 4) add
DIAGNOSTIC AND THERAPEUTIC PROCEDURES · NERVE BLOCK S - PERIPHERAL/OTHER INJECTIONS
$17.10What this reference tells you
G123 identifies the Ontario insured service described as “for each additional one (to a maximum of 4) add.” The listed fee and rules are reference data; the clinical record must support the service actually performed.
Before using this code
Confirm the current Ministry publication, the patient and provider context, the date of service, and documentation supporting the claim. A searchable reference does not establish eligibility or guarantee payment.