Myositis ossificans progressiva, right toe(s)

This code signifies a rare, severe genetic disorder characterized by progressive heterotopic ossification, meaning bone forms in soft tissues where it shouldn't, specifically affecting the right toe(s). This abnormal bone growth leads to significant pain, stiffness, and functional impairment in the affected digits.

Apply this code when documentation explicitly states a diagnosis of myositis ossificans progressiva with involvement of the right toe(s). This diagnosis is typically confirmed through clinical examination, imaging studies (e.g., X-rays, CT scans), and genetic testing.

• Ensure the laterality (right) and specific anatomical site (toe(s)) are clearly documented.
• Differentiate from localized myositis ossificans, which is typically post-traumatic and not progressive.
• Consider sequencing this code as a primary diagnosis when it is the focus of the encounter.