Osteonecrosis due to drugs, pelvis

This code signifies the death of bone tissue in the pelvis, specifically caused by the use of certain medications. This condition, also known as avascular necrosis, results from an interruption of blood supply to the bone, leading to bone collapse and potential joint destruction.

Apply this code when documentation clearly states osteonecrosis of the pelvis and explicitly links it to drug therapy, such as corticosteroids or bisphosphonates. Supporting documentation should include imaging reports (e.g., MRI, X-ray) confirming the diagnosis and a physician's note detailing the drug etiology.

• Ensure the documentation specifies the pelvis as the affected site; do not use for other anatomical locations.
• Verify that the drug-induced etiology is explicitly stated by the provider, not merely inferred.
• Sequence this code as the primary diagnosis when the osteonecrosis is the reason for the encounter.