M87.321

HCC Category Mapping

What This Code Means

Death of bone tissue in the right upper arm bone (humerus) caused by a secondary condition or factor.

Coding Tips

• •Ensure documentation specifies 'right' humerus to avoid coding errors
• •Consider whether the patient has had prior radiation therapy, chemotherapy, or significant trauma to this area

Clinical Significance

Secondary osteonecrosis of the right humerus represents a serious condition affecting the major bone of the upper arm due to identifiable non-traumatic causes. This condition can significantly impair arm function and may progress to require surgical intervention including possible joint replacement.

Documentation Requirements

• ✓Documentation of underlying secondary cause of osteonecrosis
• ✓Imaging confirmation of osteonecrosis in right humerus
• ✓Clinical examination demonstrating right arm dysfunction
• ✓History of predisposing conditions or medications
• ✓Exclusion of traumatic and idiopathic etiologies
• ✓Documentation of pain, weakness, or functional limitations
• ✓Provider statement identifying secondary nature
• ✓Evidence of bone death through appropriate imaging studies

Commonly Confused Codes