Osteonecrosis due to previous trauma, right foot

This code signifies the death of bone tissue in the right foot resulting from a prior traumatic injury. This condition, also known as avascular necrosis, occurs when the blood supply to the bone is disrupted, leading to bone collapse and potential joint destruction.

Apply this code when documentation clearly indicates osteonecrosis of the right foot directly attributed to a past traumatic event, such as a fracture or dislocation. Supporting documentation should specify the anatomical site (right foot) and the etiology (previous trauma).

• Ensure the documentation explicitly links the osteonecrosis to a previous trauma, not an acute injury.
• Verify the laterality is precisely documented as "right foot."
• Consider sequencing this code after any acute injury codes if the trauma is still being treated, or as a primary diagnosis if the osteonecrosis is the main reason for the encounter.