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R279
R279 – Maxilla advancement
OHIP Radiology Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
Maxilla advancement (R279) is a surgical procedure to reposition the upper jaw. This procedure is listed in the Musculoskeletal System section of the Schedule of Benefits under the Skull and Mandible subsection.
When to Use
- Use R279 for definitive surgical repositioning of the maxilla in cases of dentofacial deformity or skeletal malocclusion.
- Select R279 when performing a Le Fort I osteotomy for maxillary advancement, ensuring the procedure is distinct from simple dental extractions or minor alveolar surgery.
Common Pitfalls
- Billing R279 alongside other jaw procedures without checking for 'Multiple Procedure' rules, which may trigger automatic fee reductions.
- Attempting to bill a second surgical assistant without prior approval from a medical consultant, as R279 is not on the pre-approved list for dual assistance.
- Incorrectly applying the E420 Trauma Premium without documenting the required Injury Severity Score (ISS) in the patient's medical record.
Billing Tips
- Always verify the patient's age at the time of the procedure to ensure the correct age-based fee premium is applied, as these are not automatically calculated by the system.
- For non-elective cases occurring after hours, ensure the claim includes the appropriate E409 or E410 premium, but note that these cannot be combined with the E420 Trauma Premium.
Provider Fee$440.15
Surgical Assistant Fee$75.06
Anaesthetist Fee$123.92
Non-Anaesthetist Fee$123.92
Effective: April 1, 2025
Category
N. Musculoskeletal System Surgical Procedures
Subcategory
MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Musculoskeletal System Surgical Procedures
Anaesthesia basic units: 8. This is the base value used for calculating the anaesthetist's fee.
Assistant basic units: 6. This is the base value used for calculating the surgical assistant's fee.
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