Osteitis deformans of left ankle and foot

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

Use this code when documentation clearly indicates a diagnosis of Paget's disease (osteitis deformans) specifically impacting the left ankle or foot. Supporting documentation should include imaging reports (e.g., X-rays, bone scans) showing characteristic Pagetic changes, along with clinical findings such as pain, deformity, or warmth in the affected area.

• Ensure laterality is precisely documented; this code is specific to the left ankle and foot.
• Distinguish from other metabolic bone diseases like osteoporosis or osteomalacia, which have different ICD-10-CM codes.
• Code any associated pathological fractures or other complications of Paget's disease separately.