Myositis ossificans traumatica, unspecified shoulder

This code signifies the presence of myositis ossificans, a condition characterized by the formation of heterotopic bone within muscle tissue, specifically in the shoulder region, due to a traumatic injury. It represents a non-neoplastic proliferation of bone and cartilage in soft tissues, often following a contusion or strain.

Apply this code when documentation clearly indicates myositis ossificans of the shoulder, arising from a traumatic event, and the specific side (left or right) is not documented. This diagnosis is typically supported by imaging studies (e.g., X-ray, MRI) showing calcification or ossification within the muscle.

• Ensure the documentation specifies a traumatic origin for the myositis ossificans.
• Avoid using this code if the laterality of the affected shoulder is specified; instead, use M61.011 or M61.012.
• Do not confuse with other calcific conditions of the shoulder, such as calcific tendinitis, which has a different underlying pathology.