Major osseous defect, right forearm

This code signifies a significant loss of bone tissue in the right forearm, extending beyond a minor cortical defect. This condition often results from trauma, infection, tumor resection, or congenital anomalies, leading to structural instability and functional impairment.

Apply this code when documentation clearly indicates a substantial osseous defect in the right radius or ulna. This is typically supported by imaging reports (X-ray, CT, MRI) detailing the size and location of the defect, and operative reports describing bone loss during surgical intervention.

• Ensure laterality (right forearm) is explicitly documented.
• Distinguish from minor bone loss or non-union without significant defect.
• Consider sequencing with codes for underlying cause (e.g., fracture, osteomyelitis) if applicable.