Other osteonecrosis, pelvis

This code signifies the death of bone tissue in the pelvis due to insufficient blood supply, not otherwise specified. This condition can lead to bone collapse and joint destruction, causing pain and functional impairment in the pelvic region. It encompasses various forms of osteonecrosis affecting pelvic bones, excluding those with specific etiologies or locations already classified elsewhere.

Use this code when documentation clearly indicates osteonecrosis affecting any bone within the pelvis (e.g., ilium, ischium, pubis) and the specific cause or type of osteonecrosis is not documented or is not classifiable to a more specific code. Supporting documentation should include imaging reports (MRI, X-ray) confirming osteonecrosis and physician notes detailing the pelvic location.

• Ensure the documentation specifies "pelvis" as the affected site; avoid using this code for osteonecrosis of the hip or femur head.
• Always look for more specific codes first, such as those for osteonecrosis due to drugs, trauma, or other specified causes.
• Code any underlying conditions contributing to the osteonecrosis (e.g., corticosteroid use, sickle cell disease) as secondary diagnoses.