What is OHIP billing code G543?

G543 is "Sleep-deprived/induced EEG - professional component", an OHIP Diagnostic and Therapeutic Procedures code from the Ontario Schedule of Benefits (Physician Services).

How much does G543 pay?

The current OHIP fee for G543 is $120.00, effective 2025-04-01, per the Ontario Schedule of Benefits.

How do I bill G543 to OHIP?

G543 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates G543 claims against the Schedule of Benefits rules before submission.

What codes are related to G543?

Codes related to G543 in the Schedule of Benefits include G541, G414, G415, G418, G496, G540, G545, G542.

All codes

G543

G543 – Sleep-deprived/induced EEG - professional component

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

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A sleep-deprived/induced EEG is an EEG recording (with or without video monitoring) performed after an overnight period of sleep deprivation of greater than 4 hours; or the administration of a sedative/hypnotic agent prior to the EEG recording for the purposes of sleep induction, and must include all of the following: a. at least 60 minutes of EEG recording time; b. a minimum of 16 channels of EEG; and c. recordings of at least two physiological parameters.

Referral requiredFrom: Physician, NursePractitioner, DentalSurgeon

A sleep-deprived/induced EEG is eligible for payment as G543 only when the following is documented in the medical record: • At least 60 minutes of EEG recording time. • A minimum of 16 channels of EEG. • Recordings of at least two physiological parameters.

Usage limits

OR([1, "day", "per_patient", "Only one of G415, G418, G543 or G496 are eligible for payment per day."])

G541 G414 G415 G418 G496 G540 G545 G542 G546 G554 G555 G544 J898 J899 J990 J896 J897 J895 J890 J889 J893 J894

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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