Paralytic calcifcn and ossification of muscle, right forearm

This code signifies the pathological hardening of muscle tissue in the right forearm due to the formation of calcium deposits and bone, specifically occurring in a muscle that has lost its ability to contract. This condition often results from trauma, inflammation, or prolonged immobility, leading to the transformation of muscle fibers into bone-like material.

Apply this code when documentation clearly indicates the presence of calcification and ossification within the muscle of the patient's right forearm, accompanied by evidence of muscle paralysis or significant functional impairment. This diagnosis is typically supported by imaging studies (e.g., X-ray, CT scan) confirming the calcific and osseous changes, along with clinical notes describing the paralytic state of the affected muscle.

• Ensure documentation specifies the right forearm; laterality is crucial for accurate coding.
• Distinguish from myositis ossificans traumatica (M61.0-) if the paralysis is not explicitly stated as the underlying cause.
• Code any underlying cause of the paralysis (e.g., nerve injury, stroke sequelae) as a primary diagnosis if applicable, with this code as a secondary diagnosis.