M62: Other disorders of muscle

M62.5: Muscle wasting and atrophy, not elsewhere classified

Muscle wasting and atrophy is a condition that involves a noticeable decrease in the mass of the muscles, which often leads to weakness. It's not specific to any one area of the body and can develop in several muscles at the same time. Muscle wasting and atrophy can occur due to various underlying causes such as prolonged inactivity or immobilization, malnutrition, certain medical conditions like neuromuscular diseases, and aging. When a person has muscle wasting and atrophy, they may experience symptoms such as significant muscle weakness, trouble moving or walking, and, in severe cases, physical disability. Over time, it can profoundly impact a person’s ability to perform daily activities and maintain physical independence. The condition may progress slowly or rapidly depending on the cause and the individual's overall health.