Osteitis deformans of left thigh

This code signifies Paget's disease affecting the left femur. It describes a chronic bone disorder characterized by abnormal bone remodeling, leading to enlarged and weakened bone structure specifically in the left thigh.

Apply this code when documentation explicitly states a diagnosis of Paget's disease (osteitis deformans) impacting the left femur. Supporting documentation would include imaging reports (X-rays, bone scans) confirming characteristic bone changes and physician notes detailing the affected site.

• Ensure laterality is clearly documented; differentiate between left, right, or bilateral involvement.
• Do not confuse with other bone disorders like osteomyelitis or osteoporosis.
• Code any associated pathological fractures separately, if present.