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Billing code

G913A — Vertebral facet injection – each additional site

Facet injection, extra site

Bill G913 for each additional site in a fluoroscopy-guided facet injection or medial branch block, with G910, G911 or G912.

Watch for: Payable only on the same claim as G910, G911 or G912, maximum 7 per patient per day.

Code

G913A

Description

Vertebral facet injection – each additional site

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 each extra spinal level in a fluoroscopy-guided facet injection or medial branch block, billed with G910, G911 or G912.

What it covers

G910 (cervical), G911 (thoracic) and G912 (lumbar/sacral) are percutaneous diagnostic injections with fluoroscopic guidance: facet medial branch block, facet joint injection or sacral lateral branch block. G913 is added for each extra site after the first (J75).

A 'site' is the anatomic area the fee code describes (J74).

Billing rules

• Only payable with G910, G911 or G912 (J75).
• Maximum 7 G913 services per patient per day (J75).
• The first-site codes G910, G911 and G912 are each limited to 6 per patient per 12 months unless the Ministry gives written prior authorization (J75).
• Diagnostic pain injections are paid only when done solely to find the source of pain or to plan treatment (J74).
• Fees for obtaining or interpreting guidance images (professional or technical) are not payable on top of these injections (J74).
• Injection codes listed elsewhere in the Schedule (for example G370/G371) are not payable for the same injection procedure (J74).
• The chart must describe the procedure (or, with image guidance, keep images of final needle placement showing the site and/or contrast spread) and, for a diagnostic injection, its purpose and whether the response was positive or negative (J74).

Often billed with

• G910, G911 or G912 for the first site (J75).

Common rejections

• AD9: OHIP describes this as 'Premium not allowed alone': this add-on is paid only with G910, G911 or G912 on the same claim; add the base code or remove the add-on.
• A3H: OHIP describes this as 'Maximum Number Services per the Fee Schedule Master': more than 7 additional sites were billed for the patient that day (J75).

Related codes: G910, G911, G912, G914, G915, G916

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Nerve Blocks - Interventional Pain Injections, page J75.

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