< Billing codes

Billing code

G319A — Maximal Stress Ecg - Professional Component

Exercise stress ECG, interpretation

Bill G319 for the professional component of a maximal or submaximal exercise stress ECG, including the clinical assessment immediately before testing.

Watch for: A physician must attend throughout; don't bill a separate visit for the pre-test assessment, it is included.

Code

G319A

Description

Maximal Stress Ecg - Professional Component

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

Professional component of a maximal or submaximal exercise stress ECG. The physician must be in attendance throughout.

What it covers

G319 is the professional component of a maximal stress ECG (to exhaustion, symptoms or ECG changes) or submaximal stress ECG (to target heart rate) on a treadmill or ergometer, with continuous monitoring and resting ECGs before and after (J15). G315 is the technical component.

The professional component includes the clinical assessment immediately before testing (J15), and the interpretation must be done personally by the physician who bills it (J1).

Billing rules

• A physician must be in attendance at all times during the test (J15).
• The pre-test clinical assessment is part of G319, not a separate visit (J15).
• Uninsured for routine annual stress tests in asymptomatic patients whose 10-year coronary heart disease risk is under 10% by a generally accepted method such as the Framingham Risk Score (J15).
• Not payable for routine preoperative screening for a low-risk procedure or a patient at low risk of perioperative cardiac complications, unless there is another clinical indication (J15).
• Oximetry J323 and J332 are not payable with G319 (H6).

Often billed with

• G315 technical component for the same test (J15).

Common rejections

• ARF: OHIP describes this as 'Missing Physician Referring Number': the claim went in without a referring provider number where OHIP's claim edits expected one. If another provider requested the test, add their billing number and resubmit.

Related codes: G315, G313, G174, G111, G112, G583

Source: Schedule of Benefits (July 1, 2026), Diagnostic and Therapeutic Procedures, Electrocardiography (ECG) — Stress testing, Maximal stress ECG, page J15

APEX checks every paid claim against the Schedule of Benefits and flags codes billed below what the visit qualified for. See how APEX works · Pricing