Myositis ossificans traumatica, right thigh

This code represents the formation of heterotopic bone within the soft tissues of the right thigh, specifically resulting from a traumatic injury. This condition, also known as myositis ossificans circumscripta, involves non-neoplastic bone growth in muscle or other connective tissues following trauma.

Use this code when documentation clearly indicates the diagnosis of myositis ossificans in the right thigh, directly attributed to a past or recent traumatic event. Supporting documentation should include imaging reports (e.g., X-ray, MRI) confirming heterotopic ossification and a history of trauma to the affected area.

• Ensure laterality is accurately documented; this code is specific to the right thigh.
• Distinguish from other forms of heterotopic ossification (e.g., neurogenic) which would use different M61 subcategories.
• Always code the underlying cause of the trauma if known and still relevant to the current encounter.