XRGE358
Fusion Sacroiliac Joint, Right to New Technology Group 8 with Internal Fixation Device with Tulip Connector, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | X New Technology |
| Body System | R Joints |
| Operation | G Fusion |
| Body Part | E Sacroiliac Joint, Right |
| Approach | 3 Percutaneous |
| Device | 5 Internal Fixation Device with Tulip Connector |
| Qualifier | 8 New Technology Group 8 |
Operation Definition
Joining together portions of an articular body part rendering the articular body part immobile
Procedure Overview
This family covers joint fusion procedures performed with a New Technology interbody or fixation device intended to permanently immobilize an articular joint, most commonly used in spinal surgery for degenerative disc disease, spondylolisthesis, or instability that has not responded to conservative care. The goal is the same as any fusion - eliminating painful motion between two bones by letting them grow together into one solid unit - but the device or biologic used to promote that fusion is advanced enough to be tracked separately from standard interbody cages.
Patients typically undergo this procedure after persistent back or neck pain traced to an unstable segment, when imaging shows the joint moving abnormally or pressing on nearby nerves. The newer implant materials or surface treatments are chosen because trial data showed faster, more reliable bone bridging than earlier-generation hardware.
Anatomy & Axis Detail
Sacroiliac Joint, Right
The right sacroiliac joint links the sacrum to the right ilium through a largely fibrous, minimally mobile articulation reinforced by dense interosseous and posterior ligaments, making it a common source of chronic low back and buttock pain when degenerated or hypermobile. Fusion here eliminates the small residual motion that provokes pain by joining the sacral and iliac surfaces into a single stable unit, typically using implants placed across the joint under image guidance rather than open joint preparation. Because the joint sits adjacent to the sacral nerve roots and pelvic vasculature, device trajectory and depth are documented precisely. New technology codes for this fusion capture implants or techniques, such as specific porous or fenestrated devices, that differ materially from established sacroiliac fusion approaches and are not yet reflected in standard root operation tables.
Approach: Percutaneous
In New Technology, Percutaneous describes entry into the body via needle or instrument puncture through the skin or a mucous membrane, without a surgical incision, mirroring the same concept in Medical and Surgical. It is distinguished from Open access, which requires a full incision, and from Percutaneous Endoscopic, which adds visualization through the puncture site.
Device / Substance / Technology: Internal Fixation Device with Tulip Connector
This value identifies an internal spinal fixation device that uses a tulip-shaped connector to secure a rod to a vertebral anchor, commonly part of posterior tethering or fixation constructs used in scoliosis correction. It is distinguished from other internal fixation hardware by this specific tulip connector design, which allows angular adjustment and secure rod capture. The component works alongside tether or rod systems rather than functioning as a standalone implant.
Qualifier: New Technology Group 8
Group 8 identifies technologies added to the New Technology section for the 2021-2022 update cycle, tying a given code to that specific approval year. The underlying substance, device, or technique is defined by the other six axis positions, not by the group number itself. Because group numbers simply track chronology, Group 8 differs from Group 7 and Group 9 only in when CMS granted the technology separate recognition.
Coding & Documentation
A coder needs the operative report to name the specific fusion device or technology and confirm that the joint surfaces were prepared and immobilized as part of the same procedure. Supporting documentation should identify the specific spinal level or joint fused and any bone graft or biologic used alongside the device.
The recurring error is applying a standard Medical and Surgical Fusion code when the device actually qualifies for New Technology tracking, which understates the technology used and can affect reimbursement. Coders should also avoid double-counting fusion at levels where only decompression, not fusion, was performed in the same session.
Commonly Confused With
This is easily confused with standard-section Fusion procedures using conventional cages, where the deciding factor is strictly which device was implanted. It also gets mixed up with Insertion procedures for New Technology joint devices, but Fusion requires that the joint be rendered immobile, while Insertion covers appliances placed to monitor or assist function without eliminating joint motion.