Disp fx of posterior wall of unsp acetab, init for opn fx

This code signifies a break in the posterior wall of the acetabulum, the socket of the hip joint, where the bone fragments are no longer in their normal anatomical alignment. The specific side (left or right) of the acetabulum is not documented. This particular code is for an open fracture, meaning the skin and soft tissue overlying the fracture are compromised, and it is the initial treatment encounter.

Use this code for a patient presenting with an acutely sustained, displaced fracture of the posterior acetabular wall where the medical record does not specify laterality. This code is appropriate when the fracture is open, indicating a direct communication between the fracture site and the external environment, and the patient is receiving initial active treatment for this injury.

• Ensure documentation explicitly states "displaced" and "open fracture" for accurate code assignment.
• Verify that the encounter is for initial treatment; subsequent encounters will require different seventh characters.
• If laterality (left or right) is documented, a more specific code should be selected.