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Billing code

G303A — Transthoracic Pacemaker - Insertion

Transthoracic pacemaker insertion

Bill G303 for inserting a transthoracic pacemaker; it is payable in addition to a consultation or assessment.

Watch for: Critical care time billed the same day must exclude the time spent on this separately billed procedure.

Code

G303A

Description

Transthoracic Pacemaker - Insertion

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

Insertion of a transthoracic pacemaker.

What it covers

G303 is insertion of a transthoracic pacemaker, listed in the Critical Care part of Diagnostic and Therapeutic Procedures (J29).

Procedures in this section are payable in addition to a consultation or assessment unless the listing says they are included (J3).

Billing rules

• Payable in addition to a consultation or assessment (J3).
• Listed as a major invasive procedure for after-hours premiums: when non-elective (or delayed by an emergency) and started in the evening, on a weekend or holiday, or at night, add E412 (+20%) or E413 (+40%) as an Emergency Department Physician billing H codes, or E409 (+50%) or E410 (+75%) otherwise (GP103, GP104).
• If you are also billing critical care time, that time excludes time spent on separately billable interventions (J26, J28).

Often billed with

• G521/G523/G522 life-threatening critical care, or G395 other critical care (J26, J28).
• E412/E413 or E409/E410 when non-elective and done after hours (GP104).

Related codes: G521, G523, G522, G395, G211, Z438

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Critical Care, page J29.

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