CPT® Code 27050

The procedure described by CPT® Code 27050 refers to an arthrotomy performed specifically on the sacroiliac joint (SIJ) for the purpose of obtaining tissue samples through a biopsy. This procedure is typically indicated for evaluating various conditions that may affect the sacroiliac joint, including pain, inflammatory diseases, infections, lesions, or tumors. The approach involves making a skin incision in the lower back, directly over the right or left sacroiliac joint. Following the incision, the surgeon carefully divides the soft tissues to expose the joint, allowing for a thorough examination of the joint surfaces and surrounding structures. During the procedure, any abnormalities observed in the bone or joint surfaces are documented, and biopsies may be taken from lesions, synovial tissue, cartilage, or bone as necessary. These tissue samples are crucial for further laboratory analysis, which is reported separately. After the biopsy is completed, the joint is typically flushed with a saline solution to ensure cleanliness, and the operative wound is meticulously closed in layers to promote proper healing.