What is OHIP billing code G541?

G541 is "EEG - technical component", an OHIP Diagnostic and Therapeutic Procedures code from the Ontario Schedule of Benefits (Physician Services).

How much does G541 pay?

The current OHIP fee for G541 is $45.30, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill G541 to OHIP?

G541 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates G541 claims against the Schedule of Benefits rules before submission.

What codes are related to G541?

Codes related to G541 in the Schedule of Benefits include G543, G496, G414, G415, G418.

All codes

G541

G541 – EEG - technical component

OHIP Diagnostic and Therapeutic Procedures Code — DIAGNOSTIC AND THERAPEUTIC PROCEDURES · Schedule of Benefits

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G541 represents the technical component for two types of advanced EEG studies: 1. Sleep-deprived/induced EEG: This is an EEG recording (with or without video monitoring) performed under one of the following conditions: • After an overnight period of sleep deprivation of greater than 4 hours. • Following the administration of a sedative/hypnotic agent for sleep induction. It must include all of the following: • At least 60 minutes of EEG recording time. • A minimum of 16 channels of EEG. • Recordings of at least two physiological parameters. 2. EEG with time-locked video recording: This study must include all of the following: • At least 30 minutes of EEG recording time. • A minimum of 16 channels of EEG. • Recordings of at least two physiological parameters. • A time-locked video recording.

The physician submitting a claim for the G541 technical component is responsible for the complete quality assurance process for all elements of the service, including data acquisition, reporting, and record keeping. The physician must be able to demonstrate this upon request by the MOH.

The physician maintains documentation that describes the process by which the physician monitors quality assurance in accordance with professional standards.

the physician has the necessary training and experience to personally render the technical component of the service

G543 G496 G414 G415 G418

1. The amount payable for a sleep-deprived/induced EEG, or an EEG with time-locked video recording that does not meet the above requirements will be reduced to that for a routine EEG fees (i.e. G414 and G415/G418). 2. G414 is not eligible for payment with G541. 3. Only one of G415, G418, G543 or G496 are eligible for payment per day. 4. EEG services (i.e. G414, G415, G418, G496, G541, G543, G540, G545, G542, G546, G554, G555, or G544) are not eligible for payment with any overnight or daytime sleep study (i.e. J898, J899, J990, J896, J897, J895, J890, J889, J893 or J894).

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