M88.9: Paget disease of bone, unspecified

Paget's disease of bone, unspecified, is a chronic bone disorder that typically begins with excessive bone breakdown followed by an increased rate of bone formation. This abnormal bone remodeling process leads to bones that are weaker and softer than normal, which can result in bone pain, deformities, and fractures. Doctors don't exactly know what causes Paget's disease, but they believe that both genetic factors and certain viral infections might be involved. It's more common in older people and in those of European ancestry. Symptoms vary widely from person to person and can include bone pain or tenderness, joint discomfort, and a noticeably warm skin over the affected bone. Since it can affect any bone in the body, the disease can also cause a wide range of other problems, depending on what bones are involved.