CPT® Code 0707T

Injection(s), bone-substitute material (eg, calcium phosphate) into subchondral bone defect (ie, bone marrow lesion, bone bruise, stress injury, microtrabecular fracture), including imaging guidance and arthroscopic assistance for joint visualization

The procedure described by CPT® Code 0707T involves the injection of bone-substitute material (BSM), such as calcium phosphate, into a subchondral bone defect. This type of defect may arise from various conditions, including bone marrow lesions, bone bruises, stress injuries, or microtrabecular fractures. The primary goal of this procedure, commonly referred to as subchondroplasty, is to alleviate joint pain associated with these defects by restoring structural integrity to the affected area. The calcium phosphate material used in this procedure is specially formulated to flow easily into the defect, where it subsequently crystallizes to form a solid structure that mimics the properties of healthy cancellous bone. Over time, the BSM is gradually resorbed and replaced by new bone as the healing process occurs. This minimally invasive procedure employs imaging guidance, typically fluoroscopy, along with arthroscopic assistance to visualize the joint and ensure accurate placement of the material. It is applicable to various joints, including the shoulder, hip, knee, foot, and ankle, depending on the specific location and type of defect being treated. Pre-operative imaging, such as MRI, is utilized to identify the defect and determine the optimal entry point for the cannula, which is essential for the successful execution of the procedure.