Disp fx of ant column of unsp acetab, subs for fx w nonunion

This code signifies a fracture of the anterior column of the acetabulum (the hip socket's front part, also known as the iliopubic column) that is displaced, meaning the bone fragments are out of alignment. The "subsequent encounter" indicates the patient is receiving follow-up care for this fracture, and "nonunion" specifies that the bone has failed to heal properly after a reasonable period.

Use this code for patients presenting for ongoing management of a previously diagnosed, displaced anterior column acetabular fracture that has not united. This includes situations where surgical intervention for nonunion is being planned, or conservative management for nonunion is continuing. It would also apply to follow-up appointments assessing the progress or lack thereof in healing for such a fracture.

• Ensure documentation clearly states "nonunion" for the fracture.
• Verify the fracture is specifically of the anterior column (iliopubic) of the acetabulum.
• Confirm this is a subsequent encounter, not the initial treatment for the fracture.