M61: Calcification and ossification of muscle

M61.4: Other calcification of muscle

Other calcification of muscle, referred to under the ICD-10 code M61.4, represents a specific medical condition characterized by the abnormal deposits of calcium in the muscle tissue. These calcium deposits, which are not normally present in the muscles, can cause stiffness, pain, and restricted movement. The exact cause of muscle calcification can vary - it sometimes occurs after an injury to a muscle, during aging or due to certain inherited muscle disorders. However, in many cases, the exact cause isn't known. In some instances, these calcifications might cause no symptoms and only be discovered during a medical check-up for unrelated issues. In other cases, a person might notice a hard lump under their skin or experience discomfort or muscle weakness. The progress of the disease can also vary widely, from gradual to rapid progression.