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Billing code

G377A — Intralesional infiltration — three or more lesions

Lesion injection, three or more

Bill G377 for intralesional infiltration of three or more lesions at one visit; one or two lesions are G375.

Watch for: Corticosteroid injection of acne lesions isn't insured.

Code

G377A

Description

Intralesional infiltration — three or more lesions

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, 2026

Termination date

No end date

Explanation

Updated October 26, 2026

Intralesional injection (infiltration) of three or more lesions at one visit. One or two lesions are G375.

What it covers

G377 is intralesional infiltration of 3 or more lesions; 1 or 2 lesions is G375, and extensive infiltration is G383, independent consideration (J54).

Intralesional injection of acne lesions with corticosteroids is not an insured service (J54).

Billing rules

• Uninsured for corticosteroid injection of acne lesions (J54).
• Payable in addition to a consultation or assessment (J3).
• Marked (+): add G700 when it is the sole reason for the visit, once per visit however many procedures; not in hospital, and paid at 15% for patients enrolled to a capitation group (J3).
• Extensive infiltration is G383, claimed by independent consideration (J54, GP12).
• FHO: an in-basket core service in Schedule 2 and the LTC Schedule 2A (Agreement p.77, p.84).

Often billed with

• G700 when the injection is the sole reason for the visit (J3).

Related codes: G375, G396, G700, G372

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Injections or Infusions, page J54.

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