Osteonecrosis due to previous trauma, pelvis

This code signifies the death of bone tissue in the pelvis resulting from a prior traumatic injury. It indicates avascular necrosis (AVN) specifically affecting the pelvic bones, where the blood supply has been compromised due to an earlier physical trauma. This condition leads to bone collapse and subsequent pain and dysfunction.

Apply this code when documentation clearly states osteonecrosis or avascular necrosis of the pelvis, and explicitly links the condition to a previous traumatic event. This includes scenarios where a fracture, dislocation, or other significant injury to the pelvis preceded the development of AVN. The trauma does not need to be recent, but the causal link must be established.

• Ensure the documentation specifies the pelvis as the affected anatomical site.
• Verify that the osteonecrosis is explicitly attributed to a previous trauma, not other causes like steroid use or idiopathic origin.
• Code any associated current pain or functional impairment separately, if documented.