Myositis ossificans progressiva, left finger(s)

This code identifies a rare genetic disorder characterized by progressive heterotopic ossification, meaning bone forms in soft tissues where it shouldn't. Specifically, it indicates this abnormal bone growth is occurring in the finger(s) of the patient's left hand. This condition leads to severe functional impairment as muscles, tendons, and ligaments are gradually replaced by bone.

Use this code for patients diagnosed with fibrodysplasia ossificans progressiva (FOP) who present with ossification affecting their left finger(s). Documentation should clearly state the diagnosis of myositis ossificans progressiva and specify the involvement of the left finger(s), often noted through imaging studies like X-rays or CT scans.

• Ensure the documentation explicitly states "progressiva" to differentiate from localized myositis ossificans.
• Verify laterality; this code is specific to the left finger(s).
• Consider additional codes for associated symptoms or complications, such as pain or functional limitations.