Severely displaced Zone I fx sacrum, subs for fx w nonunion

This code describes a severe fracture of the sacrum within Zone I, indicating involvement of the sacral ala. The fracture is significantly displaced, meaning the bone fragments are not properly aligned. This specific code is used when the patient is receiving follow-up care for this fracture, and there is evidence that the bone is failing to heal properly (nonunion).

Apply this code for patients presenting for ongoing treatment of a severely displaced Zone I sacral fracture that has not healed as expected. This includes scenarios where surgical intervention for nonunion is being considered or performed, or during conservative management of a confirmed nonunion. It is appropriate for any subsequent encounter after the initial treatment of the acute fracture.

• Ensure documentation clearly specifies "severely displaced" and "Zone I" for sacral fracture.
• Confirm the encounter is for follow-up care and not the initial treatment of the acute fracture.
• Verify that the physician's notes explicitly state or strongly imply nonunion of the fracture.