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Billing code

G370A — Injection Bursa, Aspiration joint, ganglion, tendon sheath

Joint or bursa injection

Bill G370 for injecting a bursa, or injecting or aspirating a joint, ganglion or tendon sheath; extra sites are G371, up to 5.

Watch for: Bill additional sites as G371, not extra G370s; only one of G370, G371, G328 or G329 per joint.

Code

G370A

Description

Injection Bursa, Aspiration joint, ganglion, tendon sheath

FHO+ basket

Covered by the FHO+ base rate payment for enrolled patients, and shadow billed at 30% (50% for Schedule 2B procedures).

Effective date

Apr 1, 2025

Termination date

No end date

Explanation

Updated October 26, 2026

Injection of a bursa, or injection and/or aspiration of a joint, ganglion or tendon sheath. Extra sites are G371.

What it covers

G370 is an injection of a bursa, or injection and/or aspiration of a joint, ganglion or tendon sheath (J53). Each additional site is G371, up to 5 (J53).

Aspiration of a bursa or complex joint, with or without injection, is G328 (extra sites G329). A complex joint is any joint other than the knee, or a knee whose anatomy is distorted by one of the inflammatory arthritides listed on J53.

Billing rules

• Bill G371 for each additional bursa, joint, ganglion or tendon sheath, to a maximum of 5 (J53).
• Only one of G370, G371, G328 and G329 per bursa, joint or complex joint (J53).
• Not payable with a surgical procedure on the same site or area (J53).
• Olecranon bursa aspiration and/or injection is billed only as G370/G371 (J53).
• Uninsured for intra-articular viscosupplementation, such as hyaluronic acid (J53).
• Add E542 when performed outside hospital (J53).
• E446 may be added to G370 or G371 when a joint injection must be repeated with image guidance after a failed blind attempt; imaging fees for the guidance are not payable to any physician (J53).
• Marked (+): add G700 when G370 is the sole reason for the visit (J3, J53).
• FHO: a Schedule 2 core service (Agreement p.77) and a Schedule 4 office procedure for the office procedures special payment (Agreement p.67 §8.7, p.93).

Often billed with

• E542 in the office (J53).
• G371 for additional sites (J53).
• G700 when the injection is the only reason for the visit (J3).

Common rejections

• EQ6: OHIP describes this as 'Referring provider number not registered with the Ministry': a referring provider number on the claim isn't a registered number; check or correct it.
• A3H: The line billed more services than OHIP allows; additional sites are billed as G371 (maximum 5), not as extra G370 services (J53).
• EH2: The health card version code on the claim doesn't match OHIP's record, often because the patient has a newer card; get the current version code and resubmit.

Related codes: G371, G328, G329, E542, E446, G700

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Injections or Infusions, page J53

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