0QUC37Z
Supplement Lower Femur, Left to No Qualifier with Autologous Tissue Substitute, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | Q Lower Bones |
| Operation | U Supplement |
| Body Part | C Lower Femur, Left |
| Approach | 3 Percutaneous |
| Device | 7 Autologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part
Procedure Overview
Supplement procedures in the lower bones add material - a mesh, graft, cement, or synthetic reinforcement - to strengthen or bulk up a bone that is still substantially present, rather than removing or replacing it outright. Typical uses include augmenting a thinning pelvic wall, reinforcing a healing fracture site, or filling a bone defect left after a benign lesion was scraped out.
Patients undergo this kind of procedure when a bone is structurally weak but does not need to be taken out - for example, bone grafting to fill a cavity, cement augmentation in osteoporotic bone before hardware placement, or mesh reinforcement over a thin cortical wall. The goal is to restore mechanical strength and support healing or subsequent hardware fixation, not to replace the bone's own tissue.
Anatomy & Axis Detail
Lower Femur, Left
The lower femur on the left side is the same flared metaphyseal and condylar region as its right-sided counterpart, forming the femoral half of the knee joint and providing the bony platform onto which the tibiofemoral and patellofemoral articulations depend. Supplement procedures on this segment typically follow malunion, avascular necrosis, or peri-implant bone loss around a knee arthroplasty component, where cancellous or structural graft fills a contained or uncontained defect to restore a stable surface for component seating. The cancellous-rich trabecular bone here incorporates graft material differently than the denser shaft, often allowing better graft-host integration but requiring careful defect containment to prevent subsidence. Laterality is significant since the left distal femur is documented and tracked independently from the right in staged or bilateral reconstructive planning.
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: Autologous Tissue Substitute
Autologous Tissue Substitute identifies a device value where material harvested from the patient's own body, such as an autograft, is used to replace or reconstruct a body part. Its defining feature is tissue origin from the patient, setting it apart from Nonautologous Tissue Substitute, sourced from a donor or animal, and Synthetic Substitute, made of manufactured material.
Coding & Documentation
Coders need documentation confirming that the patient's own bone structure remained in place and that material was added to reinforce or augment it - autograft, allograft, synthetic bone substitute, or cement all qualify, and the specific substance often drives the correct device value. The material must physically bolster the existing bone rather than simply fill dead space cosmetically.
A common mixup is coding Supplement when the correct root operation is Replacement, which applies only when the material takes over the entire function of a body part that has been made physically absent - if the bone itself was removed and replaced, that's Replacement, not Supplement. Another frequent error is missing a concurrent Excision or Repair code when the graft site was first debrided or an underlying fracture was fixed.