Displ assoc transv/post fx r acetab, subs for fx w nonunion

This code signifies a right acetabular fracture that involves both the transverse and posterior columns, where the bone fragments are no longer in their proper anatomical alignment. The fracture has failed to heal properly, resulting in a nonunion, and the patient is presenting for follow-up care related to this ongoing issue.

Apply this code when a patient with a previously diagnosed displaced associated transverse-posterior fracture of the right acetabulum is seen for a subsequent encounter, and imaging or clinical assessment confirms that the fracture has not united. This would be used for ongoing management, evaluation of nonunion, or planning for further intervention.

• Ensure documentation clearly specifies "nonunion" for the fracture.
• Verify the laterality (right) and the specific fracture pattern (displaced associated transverse-posterior).
• This code is for subsequent encounters; use the appropriate initial encounter code for the first presentation.