Paralytic calcifcn and ossification of muscle, left forearm

This code signifies the pathological hardening of muscle tissue in the left forearm due to the formation of calcium deposits and bone-like structures, specifically occurring in a muscle that has lost its ability to contract due to paralysis. This condition, known as myositis ossificans, is characterized by the abnormal development of bone within muscle.

Apply this code when documentation clearly indicates calcification and ossification within a paralyzed muscle of the patient's left forearm. This typically arises from trauma, neurological injury leading to paralysis, or prolonged immobilization. Supporting documentation should specify the affected limb, the presence of paralysis, and imaging findings confirming calcification/ossification.

• Ensure documentation specifies "paralytic" to differentiate from other forms of myositis ossificans.
• Verify the laterality (left forearm) is explicitly stated in the clinical notes.
• Do not confuse with M61.0- (Myositis ossificans progressiva) or M61.1- (Traumatic myositis ossificans) unless the paralysis is explicitly documented as the underlying cause.