Nondisp transverse fx left acetab, subs for fx w nonunion

This code signifies a follow-up encounter for a patient who previously sustained a transverse fracture of the left acetabulum. The fracture is not displaced, meaning the bone fragments are still in their anatomical position, but healing has failed, leading to a nonunion.

This code is appropriate when a patient presents for ongoing management of a previously diagnosed nondisplaced transverse fracture of the left acetabulum, and clinical or radiological evidence confirms that the fracture has not healed. This includes visits for evaluation, treatment planning, or intervention related to the nonunion.

• Ensure documentation clearly states "nonunion" for the fracture.
• Verify the laterality (left) and the specific fracture type (transverse acetabulum).
• Confirm this is a subsequent encounter, not the initial treatment for the fracture.