Disp fx of post wall of unsp acetab, subs for fx w nonunion

This code signifies a fracture of the posterior wall of the acetabulum, the socket portion of the hip joint, where the bone fragments are no longer in their normal anatomical alignment. The "unspecified" nature indicates the laterality (left or right) of the acetabulum is not documented. This specific code is used when the fracture has failed to heal properly, resulting in a nonunion, and the patient is receiving ongoing treatment for this complication.

Use this code for a patient presenting for follow-up care, surgical intervention, or other treatment related to a previously diagnosed displaced posterior acetabular wall fracture that has developed into a nonunion. This applies when the medical record does not specify whether the fracture is on the left or right side.

• Ensure documentation clearly states "nonunion" and "displaced" for the posterior acetabular wall fracture.
• Verify that the encounter is for subsequent care of the nonunion, not the initial treatment of the fracture.
• If laterality (left or right) is documented, a more specific code should be selected.