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Fusion Carpometacarpal Joint, Left to No Qualifier with Nonautologous Tissue Substitute, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | R Upper Joints |
| Operation | G Fusion |
| Body Part | T Carpometacarpal Joint, Left |
| Approach | 3 Percutaneous |
| Device | K Nonautologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Joining together portions of an articular body part rendering the articular body part immobile
Procedure Overview
Fusion procedures permanently join the bones of a joint together so it can no longer move, a technique most often applied to small joints of the wrist and fingers, or occasionally the shoulder, when arthritis, instability, or severe deformity has made the joint too painful or unreliable to preserve. By eliminating motion at that single joint, fusion is intended to relieve pain and restore stability, accepting stiffness in exchange for a more predictable, load-bearing joint.
Surgeons commonly perform fusion for advanced wrist arthritis, for a badly damaged finger joint following trauma or rheumatoid disease, or as a salvage option after a failed joint replacement. The bones are prepared, aligned, and held together with hardware such as plates, screws, wires, or a bone graft while the surfaces knit into a single solid unit over subsequent months.
Anatomy & Axis Detail
Carpometacarpal Joint, Left
On the left hand, the carpometacarpal joints join the distal carpal bones to the metacarpal bases, with the thumb's first carpometacarpal joint the most frequent target because repetitive pinching stress makes it prone to osteoarthritis. Fusion may also address the second through fifth carpometacarpal joints when trauma, inflammatory arthropathy, or instability has destabilized the hand's transverse arch. Because this region links a mobile digit to a nearly fixed carpal row, arthrodesis trades some hand dexterity for a stable, pain-free base for grip and pinch. Surgeons debride the articular surfaces and secure the bones with internal fixation to promote bony union, and identifying precisely which carpometacarpal joint was fused is essential for accurate coding on this side.
Approach: Percutaneous
Percutaneous describes entry by needle or instrument puncture through the skin or mucous membrane to reach the site of the procedure, without cutting the tissue open or using a visualizing scope. It differs from Open in that the site itself is never exposed, and from Percutaneous Endoscopic in that no endoscope is used to see internal structures. Common examples include needle biopsies and injections.
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
The coder must identify the specific joint fused, the approach (open, percutaneous, or percutaneous endoscopic), and the device qualifier reflecting what was used to hold the joint immobile, whether internal fixation, a bone graft from the patient's own body, synthetic substitute, or a combination of graft and internal fixation. A frequent error is choosing the wrong device qualifier when both an autograft and hardware are used together, since ICD-10-PCS has a specific combination qualifier for that scenario rather than defaulting to just "internal fixation device." Another common oversight is failing to code the bone graft harvest separately when it is taken from a different, non-contiguous body part.