All codes
R644
R644 – Coronoidectomy
OHIP Radiology Code — MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES · Schedule of Benefits
Coronoidectomy is a surgical procedure for the removal of the coronoid process of the mandible. As a surgical procedure, this service includes all common elements as described in and , pre-operative assessment, the operation itself, and post-operative care.
When to Use
- Use R644 for the surgical excision of the coronoid process specifically to address trismus or restricted mandibular excursion.
- Use this code when the procedure is performed as a standalone surgical intervention or as part of a larger temporomandibular joint (TMJ) reconstruction where the coronoid process is the primary target of the resection.
Common Pitfalls
- Do not bill R644 in combination with TMJ arthroplasty codes if the coronoidectomy is considered an integral component of the primary procedure, as this may be flagged as unbundling.
- Avoid billing R644 for simple osteotomies or minor bone contouring that does not involve the complete removal of the coronoid process, as this misrepresents the surgical scope.
- Failure to document the specific clinical indication for the coronoidectomy (e.g., mechanical obstruction, post-traumatic ankylosis) often leads to audit scrutiny regarding medical necessity.
Billing Tips
- Ensure that the operative report explicitly details the removal of the coronoid process to support the use of R644 over more generic musculoskeletal surgical codes.
- If a second assistant is required for this procedure, you must obtain prior authorization from a medical consultant and submit the surgeon's letter of justification, as R644 is not on the pre-approved list for second assistants.
Provider Fee$307.15
Surgical Assistant Fee$75.06
Anaesthetist Fee$92.94
Non-Anaesthetist Fee$92.94
Effective: April 1, 2025
Since Apr 2004, this fee has increased 0.0% vs 57.0% CPI inflation
Category
N. Musculoskeletal System Surgical Procedures
Subcategory
MUSCULOSKELETAL SYSTEM SURGICAL PROCEDURES
Service Type
Surgical
Code Classes
Musculoskeletal System Surgical Procedures
Ready to bill this code?
SnapBill makes OHIP billing simple — auto-filled codes, validation, and batch submission.