Osteonecrosis due to previous trauma, right toe(s)

This code signifies the death of bone tissue in the right toe(s) resulting from a prior traumatic injury. This condition, also known as avascular necrosis, occurs when the blood supply to the bone is disrupted due to the previous trauma, leading to bone cell death and potential collapse of the affected bone.

Use this code when documentation clearly indicates osteonecrosis of the right toe(s) and explicitly links its etiology to a past traumatic event. This typically applies to patients presenting with pain, swelling, or limited range of motion in the right toe(s following a history of fracture, dislocation, or other significant injury to the area.

• Ensure the medical record specifies "right toe(s)" and not a different anatomical site.
• Verify that the documentation explicitly states "due to previous trauma" as the cause of the osteonecrosis.
• Do not confuse with osteonecrosis from non-traumatic causes (e.g., steroid-induced, idiopathic), which would require a different subcategory.