0QWL4KZ
Revision Tarsal, Right to No Qualifier with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | Q Lower Bones |
| Operation | W Revision |
| Body Part | L Tarsal, Right |
| Approach | 4 Percutaneous Endoscopic |
| Device | K Nonautologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device
Procedure Overview
Revision procedures address a device that was previously implanted in a lower bone - such as a rod, plate, screw, or bone cement construct - when it has shifted position, is malfunctioning, or is otherwise not working as intended. The bone itself is not the primary target; the hardware or material within or against it is.
These procedures are common after orthopedic fixation surgery when follow-up imaging or symptoms reveal that a fixation device has loosened, backed out, broken, or migrated. Surgeons go back in to reposition, tighten, repair, or otherwise correct the existing device to the extent possible, aiming to avoid a full device replacement if the original hardware can still function once adjusted.
Anatomy & Axis Detail
Tarsal, Right
The tarsal bones of the right foot, including the talus, calcaneus, navicular, cuboid, and cuneiforms, form the complex hindfoot and midfoot architecture that transmits body weight to the ground. Revision procedures here typically correct malpositioned screws or plates from prior fusion or fracture fixation, particularly after subtalar or midfoot arthrodesis where alignment is critical to gait. Because these bones are small and closely packed, even slight hardware migration can impinge on adjacent joints or soft tissue, and correcting position without full removal preserves the surrounding fusion mass. Revision may also address a construct that has failed to maintain correction of a flatfoot or cavus deformity. Coders should identify the specific tarsal bone and hardware involved from the operative report.
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 documentation needs to describe correction of a device already in place - repositioning a displaced screw, replacing a broken segment of a rod, or repairing a malfunctioning fixation component - rather than removal of the device followed by insertion of a brand-new one. If the surgeon fully swaps out the device rather than fixing the one already present, Removal plus Insertion or Replacement is usually the more accurate combination.
A frequent assignment mistake is coding Revision for a straightforward hardware removal with no correction performed, or for a first-time hardware placement. Coders should also verify the correct body part value reflects the bone where the device sits, since Revision codes are structured around device location rather than the device type itself.