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Billing code

G921A — Spheno-palatine Ganglion Block, Transnasal Topical, Uni Or Bilateral

Nasal sphenopalatine ganglion block

Bill G921 once for a transnasal topical sphenopalatine ganglion block, one or both sides.

Watch for: Not payable with G232, the percutaneous block, for the same patient the same day.

Code

G921A

Description

Spheno-palatine Ganglion Block, Transnasal Topical, Uni Or Bilateral

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

Transnasal topical spheno-palatine ganglion block, one or both sides.

What it covers

G921 is a spheno-palatine ganglion block by the transnasal topical route, unilateral or bilateral (J78).

Billing rules

• One fee covers one or both sides (J78).
• Not payable with G232 (percutaneous SPG block) for the same patient the same day (J78).
• If you do more than one procedure from this section for the same patient the same day, each is payable only if it diagnoses or treats a separate condition (J74).
• Injection services listed elsewhere are not payable in addition for the same injection (J74).
• Document the procedure (with images of final needle placement when image guidance is used) and, for a diagnostic injection, its purpose and whether the response was positive or negative (J74).

Common rejections

• ADH: OHIP describes this as 'Cannot be billed together': G921 and G232 are not payable for the same patient the same day (J78).

Related codes: G232, G227, G264, G235

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Nerve Blocks - Interventional Pain Injections, page J78. Section rules J74.

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