Other secondary osteonecrosis, pelvis

This code signifies the death of bone tissue in the pelvis due to an underlying condition, rather than a primary cause. It indicates that the osteonecrosis is a consequence of another disease process, trauma, or medication use affecting the pelvic bones. This condition can lead to pain, joint collapse, and functional impairment.

Use this code when documentation clearly states secondary osteonecrosis affecting any bone within the pelvic girdle (e.g., ilium, ischium, pubis). This diagnosis is often supported by imaging studies (MRI, X-ray) showing bone infarction and a documented underlying cause such as corticosteroid use, lupus, sickle cell disease, or alcoholism.

• Always code the underlying cause of the secondary osteonecrosis first, if known and documented.
• Specify laterality if documented (e.g., M87.351 for right, M87.352 for left, M87.353 for bilateral).
• Do not confuse with primary (idiopathic) osteonecrosis (M87.0-) or osteonecrosis due to previous trauma (M87.1-).