What is OHIP billing code A646?

A646 is "Repeat consultation", an OHIP Consultations and Visits code from the Ontario Schedule of Benefits (Physician Services).

How much does A646 pay?

The current OHIP fee for A646 is $60.95, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill A646 to OHIP?

A646 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates A646 claims against the Schedule of Benefits rules before submission.

What codes are related to A646?

Codes related to A646 in the Schedule of Benefits include A645, A935, C646, W646, A643, A644.

All codes

A646

A646 – Repeat consultation

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
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(this code)
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

Repeat consultation, General Thoracic Surgery (64) general listing.

Referral required

Must be rendered by the same consultant who performed the initial consultation.

Must be for the same presenting problem as the initial consultation.

Care must have been rendered to the patient by another physician in the interval following the initial consultation but preceding the repeat consultation.

Requires a new written request by the referring physician, nurse practitioner, or dental surgeon.

Requires a written report of findings and recommendations to the referring practitioner.

Usage limits

No specific frequency limit, provided the requirements for a repeat consultation (intervening care and new request) are met.

A645Consultation A935Special surgical consultation C646Repeat consultation (Hospital In-patient)W646Repeat consultation (Long-term care)A643Specific assessment A644Partial assessment

If the requirements for a repeat consultation are not met (e.g., no intervening care by another physician), the service should be billed as an assessment (e.g., A643 or A644).

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