Major osseous defect, right ankle and foot

This code signifies a significant structural deficiency or loss of bone tissue within the right ankle or foot. This defect is substantial enough to be considered "major," often resulting from trauma, infection, tumor resection, or congenital anomalies. It implies a notable disruption to the skeletal integrity of the affected area.

Apply this code when documentation clearly specifies a "major osseous defect" affecting the right ankle or foot. This is appropriate for conditions like large bone cysts, significant bone loss post-debridement for osteomyelitis, or extensive bone resections. Supporting documentation should detail the size, location, and nature of the defect, often including imaging reports (X-ray, CT, MRI).

• Ensure documentation explicitly states "major" osseous defect; avoid using for minor bone irregularities.
• Verify laterality (right ankle/foot) is clearly documented.
• Consider sequencing this code after the underlying cause of the defect (e.g., osteomyelitis, fracture nonunion) if applicable.