What is OHIP billing code X458?

X458 is "MRE for liver fat/iron quantification", an OHIP Laboratory code from the Ontario Schedule of Benefits (Physician Services).

How much does X458 pay?

The current OHIP fee for X458 is $0.00, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill X458 to OHIP?

X458 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates X458 claims against the Schedule of Benefits rules before submission.

What codes are related to X458?

Codes related to X458 in the Schedule of Benefits include X451, X455.

All codes

X458

X458 – MRE for liver fat/iron quantification

OHIP Laboratory Code · Schedule of Benefits

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Magnetic resonance elastography (MRE) for quantification of fat and/or iron deposition in the liver

When to Use

Use X458 specifically when the MRI protocol is ordered to quantify hepatic steatosis (fat) or iron overload (hemochromatosis) using MRE sequences.
Bill X458 in conjunction with X451 when performing a comprehensive abdominal MRI that includes specialized liver quantification sequences.

Common Pitfalls

Billing X458 as a standalone procedure when it is intended to be an add-on sequence to a primary abdominal MRI (X451).
Attempting to bill X458 for general liver imaging that does not involve specific MRE-based fat or iron quantification protocols.

Billing Tips

Ensure X458 is only submitted by the anaesthesiologist if they are providing services during the procedure, as the professional/technical components are typically covered by hospital global funding.

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Provider Fee$0.00

Anaesthetist Fee$36.70

Non-Anaesthetist Fee$36.70

Effective: April 1, 2026

Service Type

Diagnostic Imaging (MRI)

Code Classes

Diagnostic

The procedure must involve Magnetic Resonance Elastography (MRE).

The clinical indication must be the quantification of fat and/or iron deposition in the liver.

X451Abdomen MRI - multislice sequence X455Abdomen MRI - repeat sequence

X458 is listed under the Abdomen section of the MRI schedule.

Unlike standard repeat sequences (X455), X458 does not have an explicit maximum number of repeats listed in the table, but it is a specific diagnostic sequence.

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