Osteonecrosis due to previous trauma, right tibia

This code signifies the death of bone tissue in the right tibia 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.

Use this code when documentation clearly states osteonecrosis of the right tibia and explicitly links its etiology to a previous traumatic event. This diagnosis is typically supported by imaging studies (e.g., MRI, X-ray) showing bone infarction and a patient history detailing the relevant trauma.

• Ensure the documentation specifies "previous trauma" as the cause, not current trauma or other etiologies like steroid use.
• Verify laterality; this code is specific to the right tibia.
• Do not confuse with osteomyelitis or other forms of bone necrosis not attributed to trauma.