What is OHIP billing code Z442?

Z442 is "Selective coronary catheterization - both arteries", an OHIP Psychiatric code from the Ontario Schedule of Benefits (Physician Services).

How much does Z442 pay?

The current OHIP fee for Z442 is $286.75, effective 2025-04-01, per the Ontario Schedule of Benefits.

How do I bill Z442 to OHIP?

Z442 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates Z442 claims against the Schedule of Benefits rules before submission.

What codes are related to Z442?

Codes related to Z442 in the Schedule of Benefits include G297, G509, G263, Z434, G262, G298.

All codes

Z442

Z442 – Selective coronary catheterization - both arteries

OHIP Psychiatric Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits

Ask AI Bill This Code — Sign Up Free

Selective catheterization of both coronary arteries. This procedure can be billed with the add-on code G263 for other drug interventional studies. G263 includes the injection of intracoronary nitroglycerin.

When to Use

Use Z442 when you have successfully performed selective catheterization of both the left and right coronary arteries during a diagnostic coronary angiogram.
Use Z442 as the primary procedure code when performing a diagnostic study that includes the visualization of both coronary systems, regardless of whether subsequent interventions are performed.

Common Pitfalls

Do not bill Z442 if only one coronary artery was selectively catheterized; use the appropriate single-artery code instead to avoid audit flags for overbilling.
Avoid billing G263 as a standalone service; it is strictly an add-on code to Z442 and requires the primary procedure to be present on the same claim.
Do not attempt to bill Z442 in conjunction with other diagnostic imaging codes that are considered inclusive of the catheterization procedure under OHIP guidelines.

Billing Tips

Ensure that G263 is only appended when specific drug interventional studies, such as the administration of intracoronary nitroglycerin, are performed and documented during the procedure.
When performing after-hours procedures, ensure the start time is clearly documented to support the application of E409 or E410, as these premiums are strictly time-dependent.

Have a specific question? Ask our billing assistant

Provider Fee$286.75

Surgical Assistant Fee$143.38

Anaesthetist Fee$92.94

Non-Anaesthetist Fee$92.94

Effective: April 1, 2025

Ready to bill this code?

SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.

Get Started Free Already have an account? Sign in