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R658
R658 – LeFort II, subcranial hypertelorism correction, Le Fort I maxillary advancement
OHIP Musculoskeletal System Surgical Procedures Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
Performs a LeFort II, subcranial hypertelorism correction and LeFort I maxillary advancement. This is a major craniofacial reconstructive surgery. The service is comprehensive and includes the harvesting and grafting of bone or cartilage grafts when required, as per the note on page of the Schedule. The fee for the surgeon (R658A) is a set procedural fee. The fee for the surgical assistant (R658B) is based on 12 base units plus time units. The fee for the anaesthesiologist (R658C) is based on 25 base units plus time units. The calculation of time units for both assistant and anaesthesiologist roles is detailed in the General Preamble (, ).
For surgical assistant services, time spent must be documented in the medical record for time unit calculation. ()
For anaesthesiologist services, anaesthesia time must be documented in the medical record for time unit calculation. ()
If the Trauma Premium (E420) is claimed, the medical record must list the Injury Severity Score (ISS). ()
Includes harvesting and grafting of bone or cartilage grafts.
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