Boy...you've gotta good one. Is there mention of any bone loss? Osteolysis? Osteolysis refers to an active resorption or dissolution of bone tissue as part of an ongoing disease process
731.3 ?
Major osseous defects are the consequence of extensive amounts of bone loss. This kind of significant bone loss most commonly results from the breakdown of bone around a previous prosthetic joint replacement, necessitating revision surgery. Bone loss, or osteolysis, also occurs from osteomyelitis, osteonecrosis, neoplastic growth, severe osteoporosis, and pathological fractures[MDash]with or without previous joint replacement. Major osseous defects caused by these factors are clinically significant because the bone into which a joint implant must be placed to repair the defect is too weak to support the prosthesis without structural bone repair. Knowledge of these bone defects and contributing factors help determine diagnosis and treatment as well as predict surgical outcomes. Primary or revision joint replacement must often be done together with morcelized or structural bone grafting and additional mechanical support for the graft such as wires, cables, cages, wedges, screws, etc. The most common area affected is the hip joint, followed by the knee. Code the underlying disease or disorder first, when it is known to have caused the major osseous defects.
Clarifying Terms:
Code first underlying disease, if known, such as:
aseptic necrosis (733.40-733.49)
malignant neoplasm of bone (170.0-170.9)
osteomyelitis (730.00- 730.29)
osteoporosis (733.00-733.09)
peri-prosthetic osteolysis (996.45)