Osteitis deformans of unspecified thigh

This code signifies Paget's disease (osteitis deformans) affecting an unspecified thigh bone. Paget's disease is a chronic disorder of bone remodeling, leading to enlarged and misshapen bones, which can result in pain, fractures, and deformities. In this specific instance, the condition is localized to the femur or other bones of the thigh, but the laterality (left or right) is not documented.

Use this code when the medical record clearly diagnoses Paget's disease of the thigh, but the physician's documentation does not specify whether it affects the left or right thigh. This code is appropriate when the thigh is identified as the affected site, but further anatomical detail is lacking. Documentation should explicitly state "Paget's disease of the thigh, unspecified" or similar.

• Avoid using this code if laterality (left or right thigh) is documented; instead, select the more specific M88.851 or M88.852.
• Ensure the documentation confirms a diagnosis of osteitis deformans (Paget's disease) and not another bone disorder.
• This code is for the bone condition itself; code any associated pathological fractures separately.