Unsp Zone III fracture of sacrum, subs for fx w nonunion

This code signifies a fracture in the lowest part of the sacrum (Zone III), where the specific type of fracture is not documented. Importantly, it indicates that the fracture has not healed properly (nonunion) and the patient is presenting for follow-up care related to this ongoing issue.

This code is appropriate for patients returning for treatment of a previously diagnosed Zone III sacral fracture that has failed to unite. It should be used when the medical record does not specify the exact nature of the sacral fracture within Zone III, but clearly documents nonunion and a subsequent encounter.

• Ensure documentation explicitly states "nonunion" and "subsequent encounter" for the sacral fracture.
• Verify that the fracture location is indeed Zone III of the sacrum.
• If the specific type of sacral fracture is documented, a more precise code should be selected.