0SR50KZ
Replacement Sacrococcygeal Joint to No Qualifier with Nonautologous Tissue Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | S Lower Joints |
| Operation | R Replacement |
| Body Part | 5 Sacrococcygeal Joint |
| Approach | 0 Open |
| Device | K Nonautologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part
Procedure Overview
Joint replacement in the lower extremities involves removing damaged or arthritic surfaces of a hip, knee, or ankle and implanting an artificial device that takes over the joint's function. Surgeons turn to this once medications, injections, and physical therapy no longer control the pain or stiffness of advanced osteoarthritis, rheumatoid arthritis, avascular necrosis, or a joint destroyed by prior trauma. The goal is restoring the ability to walk, climb stairs, and move without bone grinding on bone.
Implants are made of metal alloys, ceramic, or high-grade polyethylene, and a case can replace an entire joint (total) or a single compartment (partial). Recovery centers on physical therapy to build strength around the new joint; most patients regain substantial function within a few months, though the device will eventually wear and may need revision decades later.
Anatomy & Axis Detail
Sacrococcygeal Joint
The sacrococcygeal joint is the small, often partially fused articulation between the base of the coccyx and the apex of the sacrum, providing limited mobility that allows slight posterior displacement of the tailbone during activities such as sitting or childbirth. Chronic coccydynia from trauma, prolonged sitting, or degenerative change at this joint can become debilitating when conservative measures fail, though surgical replacement of this joint is uncommon relative to excisional approaches for persistent pain. When replacement is performed, the diseased articulation is substituted with a device intended to restore a functional, pain-free connection between sacrum and coccyx. Given how infrequently this specific procedure is performed compared to coccygectomy, clear documentation of the rationale and technique is particularly important.
Approach: Open
Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.
Device: Nonautologous Tissue Substitute
Nonautologous Tissue Substitute refers to biologic material sourced from a donor or another species, such as an allograft or xenograft, used to replace a body part. It differs from Autologous Tissue Substitute by tissue origin outside the patient's own body, and from Synthetic Substitute by being biologic rather than manufactured material.
Coding & Documentation
A coder assigns Replacement when the operative note documents removal of the native articular surface and insertion of a device meant to permanently substitute for it, not merely resurface it. Documentation should specify the joint, laterality, and whether the procedure was total or partial, since these drive qualifier selection. A common error is confusing partial resurfacing that leaves native bone intact with full Replacement, or missing that a revision arthroplasty swapping the entire prosthesis is still Replacement rather than Revision.