Myositis ossificans progressiva, right hand

This code signifies a rare, severe genetic disorder characterized by the progressive formation of bone in muscles, tendons, ligaments, and other connective tissues of the right hand. This heterotopic ossification leads to significant pain, swelling, and restricted joint mobility in the affected area.

Use this code when documentation clearly indicates a diagnosis of myositis ossificans progressiva specifically affecting the right hand. This diagnosis is typically made based on clinical presentation, genetic testing, and imaging studies (e.g., X-rays showing heterotopic bone formation).

• Ensure laterality is precisely documented as "right hand" to support this specific code.
• Distinguish from myositis ossificans traumatica (M61.0-), which is localized and often post-traumatic.
• Consider sequencing with any associated genetic disorder codes if applicable and documented.