What is OHIP billing code A133?

A133 is "Medical specific assessment", an OHIP Consultations and Visits code from the Ontario Schedule of Benefits (Physician Services).

How much does A133 pay?

The current OHIP fee for A133 is $95.95, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill A133 to OHIP?

A133 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates A133 claims against the Schedule of Benefits rules before submission.

What codes are related to A133?

Codes related to A133 in the Schedule of Benefits include A134, A131, C133, A138.

All codes

A133

A133 – Medical specific assessment

OHIP Consultations and Visits Code — CONSULTATIONS AND VISITS · Schedule of Benefits

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Levels of this visit

The A13x codes in this part of the Schedule of Benefits, lowest fee first. Bill the level the history and examination support.

Assessments

A138 Partial assessment
A partial assessment is the limited service that constitutes a history of the presenting complaint, the necessary physical examination, advice to the patient and appropriate…
$44.75
A134 Medical specific re-assessment
A service rendered by a specialist in Internal Medicine requiring a full, relevant history and physical examination of one or more systems.
$72.00
A131 Complex medical specific re-assessment
A complex medical specific re-assessment is a re-assessment of a patient because of the complexity, obscurity, or seriousness of the patient's condition.
$83.40
A133 Medical specific assessment(this code)
A service rendered by a specialist in a place other than a patient’s home, requiring a full history of the presenting complaint and detailed examination of the affected part(s)…
$95.95

Consultations

A136 Repeat consultation
A repeat consultation is an additional consultation rendered by the same consultant, in respect of the same presenting problem, following care rendered to the patient by another…
$123.10
A135 Consultation
A consultation is an assessment rendered following a written request from a referring: physician 2.
$192.85
A130 Comprehensive internal medicine consultation
A consultation rendered by a specialist in internal medicine who provides all the appropriate elements of a consultation and spends a minimum of seventy-five (75) minutes of…
$342.25

A service rendered by a specialist in a place other than a patient’s home, requiring a full history of the presenting complaint and detailed examination of the affected part(s), region(s), or system(s) needed to make a diagnosis, and/or exclude disease, and/or assess function.

Full history of the presenting complaint

Detailed examination of the affected part(s), region(s), or system(s) needed to make a diagnosis, and/or exclude disease, and/or assess function.

Usage limits

Limited to one per patient per physician per 12 month period (increased to two if different diagnosis or 90 days elapsed + hospital admission).

A134Medical specific re-assessment A131Complex medical specific re-assessment C133Medical specific assessment (In-patient)A138Partial assessment

The equivalent code for hospital in-patients is C133.

A133 is not eligible for age-based percentage premiums ().

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