What is OHIP billing code M112?

M112 is "Sternal debridement and rewiring", an OHIP Respiratory Surgical Procedures code from the Ontario Schedule of Benefits (Physician Services).

How much does M112 pay?

The current OHIP fee for M112 is $500.00, effective 2026-04-01, per the Ontario Schedule of Benefits.

How do I bill M112 to OHIP?

M112 is submitted through OHIP's MCEDT claims system, either directly or via billing software. SnapBill validates M112 claims against the Schedule of Benefits rules before submission.

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M112

M112 – Sternal debridement and rewiring

OHIP Respiratory Surgical Procedures Code — RESPIRATORY SURGICAL PROCEDURES · Schedule of Benefits

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This service involves the surgical debridement and rewiring of the sternum, with or without the use of special mechanical instrumentation. As per the surgical preamble, this fee includes associated pre-operative and post-operative care. Payment for the surgeon (`M112A) is a set fee. Payment for the assistant (M112B) is based on 6 basic units plus time units. Payment for the anaesthetist (M112C`) is based on 7 basic units plus time units. Time units for both are calculated as per the General Preamble. This procedure is explicitly listed as a service for which a second assistant is payable without requiring special authorization from a medical consultant.

If the E420 trauma premium is claimed, the Injury Severity Score (ISS) must be documented in the patient's medical record.

Anaesthesia Extra Units: The anaesthetist fee (M112C) may be eligible for additional extra units based on patient factors, such as age (E021C, E014C, E009C, E019C, E007C, E018C), high BMI (E010C), surgical position (E011C, E024C), massive transfusion (E025C), malignant hyperthermia risk (E012C), or ASA physical status (E022C, E017C, E016C, E020C).

Surgical Assistant: The fee for an assistant (M112B) is calculated using 6 basic units plus time units as per the rules on pages - of the Schedule.

Anaesthesiologist: The fee for an anaesthetist (M112C) is calculated using 7 basic units plus time units as per the rules on pages - of the Schedule.

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