Major osseous defect, left pelvic region and thigh

This code signifies a significant structural deficiency in the bone tissue of the left pelvic region and/or thigh. This defect is substantial enough to be considered "major," implying a considerable loss of bone substance rather than a minor irregularity or cortical breach. It often results from trauma, tumor resection, infection, or congenital anomalies.

Apply this code when documentation clearly indicates a major osseous defect affecting the left pelvis and/or left femur. This includes situations like large bone voids post-tumor excision, extensive osteomyelitis leading to bone loss, or severe non-union with significant bone resorption. The physician's notes should specify the "major" nature of the defect and its precise anatomical location.

• Ensure documentation explicitly states "major" or describes a defect of significant size or clinical impact.
• Do not use for minor bone irregularities or stress reactions; these would typically fall under other specific bone conditions.
• Always specify laterality (left) as indicated by the code. If the defect is bilateral or on the right, a different code is required.