C40-C41: Malignant neoplasms of bone and articular cartilage

Malignant neoplasms of bone and articular cartilage refer to a group of cancers that originate in the bones or the cartilage that cushions the ends of bones at a joint. These cancers may start in any part of any bone – from the surface to the innermost layer – and can disrupt the stability and function of the bone structure. They might also potentially spread to other locations in the body. Typically, symptoms may include persistent bone pain that gets worse over time and may continue into the night, swelling and redness over a bone, and a noticeable lump over a bone. The progression of these diseases often involves an increase in the severity of these symptoms. It's important to note that these conditions are not infectious and cannot be transmitted from person to person. Rather, they are thought to occur due to a combination of genetic, environmental, and lifestyle factors.