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Fusion Finger Phalangeal Joint, Right to No Qualifier with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | R Upper Joints |
| Operation | G Fusion |
| Body Part | W Finger Phalangeal Joint, Right |
| Approach | 4 Percutaneous Endoscopic |
| 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
Finger Phalangeal Joint, Right
The right finger phalangeal joints, comprising the proximal and distal interphalangeal joints, provide the fine hinge motion that lets fingers curl around objects during grip. Fusion is a common and often effective solution here, particularly at the distal interphalangeal joint, for painful osteoarthritis, mallet finger deformity, or chronic instability, since these joints tolerate loss of motion better than the metacarpophalangeal joints because neighboring joints can partly compensate. The bones are typically fixed with a small pin, screw, or compression device to achieve union in a functional position. Because each finger has multiple phalangeal joints that may be treated independently, accurate coding requires specifying which joint, proximal or distal, of which digit was fused.
Approach: Percutaneous Endoscopic
Percutaneous Endoscopic combines a puncture through skin or mucous membrane with insertion of an endoscope to visualize the procedure internally, as in laparoscopic cholecystectomy. It is distinguished from plain Percutaneous by the presence of scope-guided visualization, and from Via Natural or Artificial Opening Endoscopic by its route being a new puncture rather than an existing orifice or stoma.
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.