What is OHIP billing code A644?

A644 is "Partial assessment", an OHIP Consultations and Visits code from the Ontario Schedule of Benefits (Physician Services).

How much does A644 pay?

The current OHIP fee for A644 is $24.50, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill A644 to OHIP?

A644 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates A644 claims against the Schedule of Benefits rules before submission.

What codes are related to A644?

Codes related to A644 in the Schedule of Benefits include A645, A643, C644.

All codes

A644

A644 – Partial 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(this code)
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
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 partial assessment is the limited service that constitutes a history of the presenting complaint, the necessary physical examination, advice to the patient and appropriate record.

History of presenting complaint

Necessary physical examination

Advice to the patient

Appropriate medical record

Usage limits

Often used as the adjusted fee when higher-level assessments exceed their limits.

A645Consultation - General Thoracic Surgery A643Specific Assessment - General Thoracic Surgery C644Specific re-assessment - Hospital In-patient

A644A is eligible for both Video and Telephone virtual care.

Not eligible for Age-Based Fee Premiums ().

Not eligible for Chronic Disease Assessment Premium ().

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