XIII: Diseases of the musculoskeletal system and connective tissue

M95-M99: Other disorders of the musculoskeletal system and connective tissue

The group of conditions classified as "Other disorders of the musculoskeletal system and connective tissue" encompasses a wide range of disorders affecting the body's support structure comprised of bones, muscles, and connective tissues. These conditions can arise due to various causes including genetic factors, wear and tear or mechanical issues, immune system responses and infections, among others. They manifest in different ways depending on the specific condition, but common symptoms may include pain, stiffness, swelling, and loss of function in various parts of the body. Disease progression too can range from gradual onset to rapid advancement. The musculoskeletal and connective tissue disorders can have impacts beyond just the physical realm, and can influence one's capacity to move and perform daily tasks, and hence significantly affect one's quality of life.