What is OHIP billing code F033?

F033 is "Radius or ulna - open reduction", an OHIP Anaesthesia code from the Ontario Schedule of Benefits (Physician Services).

How much does F033 pay?

The current OHIP fee for F033 is $660.10, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill F033 to OHIP?

F033 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates F033 claims against the Schedule of Benefits rules before submission.

What codes are related to F033?

Codes related to F033 in the Schedule of Benefits include D009, F036.

All codes

F033

F033 – Radius or ulna - open reduction

OHIP Anaesthesia Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits

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F033 is a surgical procedure for the treatment of fractures or dislocations. The service includes all common elements as described in - and the specific elements of surgical procedures, assistance, and anaesthesia as outlined in the General Preamble. Payment varies depending on the role of the physician. Fee Calculation: - Surgeon (Suffix A): The fee for the operating surgeon is the flat rate specified in the Schedule of Benefits. - Surgical Assistant (Suffix B): The assistant's fee is unit-based. The total fee is calculated by adding base units and time units, then multiplying by the unit fee of $12.51 (as per ). This service is assigned 7 base units. Time units are calculated based on the duration of assistance as specified in . - Anaesthesiologist (Suffix C): The anaesthesiologist's fee is unit-based. The total fee is calculated by adding base units and time units, then multiplying by the unit fee of $15.49 (as per ). This service is assigned 8 base units. Time units are calculated based on the duration of anaesthetic attendance as specified in .

When to Use

Use F033 for open reduction of a radius or ulna fracture requiring internal fixation, distinguishing it from F036 which applies to closed reduction with percutaneous pinning.
Select F033 when the procedure involves an open approach to the fracture site, as opposed to D009 which is restricted to minor musculoskeletal procedures or specific diagnostic interventions.

Common Pitfalls

Billing F033 for both radius and ulna fractures performed in the same session is incorrect; the General Preamble mandates that only the major procedure's base units are claimed for assistants and anaesthetists.
Failing to apply the correct age-based premium (e.g., AGE_PREMIUM_UNDER_16_YEARS) when performing this procedure on pediatric patients, which results in significant underpayment.

Billing Tips

Ensure the surgical report clearly documents the open nature of the reduction to support the use of F033 over closed reduction codes, as this is the primary audit trigger for this service.
When multiple procedures are performed, always identify the procedure with the highest base unit value as the primary code to maximize the assistant and anaesthetist fee calculation.

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Provider Fee$660.10

Surgical Assistant Fee$77.46

Anaesthetist Fee$111.72

Non-Anaesthetist Fee$111.72

Effective: April 1, 2026

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