Major osseous defect, left hand

This code signifies a significant loss or absence of bone tissue in the left hand, often resulting from trauma, infection, tumor resection, or congenital anomalies. It indicates a structural discontinuity or void within the osseous architecture of the hand, impacting its integrity and function.

Apply this code when documentation clearly specifies a major osseous defect affecting the left hand. This typically includes descriptions of bone loss requiring grafting, prosthetic replacement, or significant reconstructive surgery. Supporting documentation should detail the location and extent of the bone defect.

• Ensure laterality is explicitly documented as "left hand" to support this specific code.
• Distinguish from minor bone defects or non-union, which may have different coding pathways.
• Consider sequencing this code with an external cause code if the defect is due to trauma.