Osteitis deformans of left forearm

This code signifies Paget's disease affecting the left forearm. It indicates a chronic bone disorder characterized by abnormal bone remodeling, leading to enlarged and weakened bones in this specific anatomical location.

Apply this code when documentation explicitly states a diagnosis of Paget's disease (osteitis deformans) involving the left forearm. Supporting documentation should include diagnostic imaging (e.g., X-rays, bone scans) and/or biopsy results confirming the condition in this limb.

• Ensure laterality is clearly documented for the affected forearm (left vs. right).
• Do not confuse with other forms of osteitis or localized bone infections.
• Code any associated pathological fractures or other complications of Paget's disease separately.