What is OHIP billing code A643?

A643 is "Specific assessment", an OHIP Consultations and Visits code from the Ontario Schedule of Benefits (Physician Services).

How much does A643 pay?

The current OHIP fee for A643 is $45.10, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill A643 to OHIP?

A643 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates A643 claims against the Schedule of Benefits rules before submission.

What codes are related to A643?

Codes related to A643 in the Schedule of Benefits include A645, A646, A644, C643.

All codes

A643

A643 – Specific assessment

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

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Levels of this visit

The A64x codes in this part of the Schedule of Benefits, lowest fee first. Bill the level the history and examination support.

Assessments

A644 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…
$24.50
A643 Specific assessment(this code)
A specific assessment requires 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…
$45.10

Consultations

A646 Repeat consultation
Repeat consultation, General Thoracic Surgery (64) general listing.
$60.95
A645 Consultation
A consultation is an assessment rendered following a written request from a referring physician, nurse practitioner, or dental surgeon (for hospital-based dental procedures).
$100.15

A specific assessment requires 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 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.

Usage limits

Limited to one per patient per physician per 12-month period. Increased to two if the second assessment is for a clearly different and unrelated diagnosis.

A645Consultation A646Repeat consultation A644Partial assessment C643Specific assessment (In-patient)

A643A is eligible for virtual care (video) as per Appendix J.

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