M87.021

HCC Category Mapping

What This Code Means

Death of bone tissue without infection in the right upper arm bone (humerus), occurring without a known cause.

Coding Tips

• •Distinguish between humerus necrosis and shoulder necrosis; humerus is the arm bone below the shoulder
• •Verify right side is clearly documented to avoid miscoding as left or unspecified

Clinical Significance

Idiopathic aseptic necrosis of the right humerus represents bone death in the upper arm bone without identifiable cause, often leading to significant functional limitations and chronic pain. This condition frequently requires surgical intervention and long-term orthopedic management to preserve arm function and prevent further bone collapse.

Documentation Requirements

• ✓Documentation of aseptic necrosis specifically involving right humerus
• ✓Confirmation of idiopathic etiology with no identifiable underlying cause
• ✓Imaging evidence showing bone necrosis in right humeral structures
• ✓Clear laterality documentation specifying right side involvement
• ✓Exclusion of infectious processes through clinical evaluation
• ✓Assessment of upper extremity function and range of motion
• ✓Treatment plan including surgical or conservative management options
• ✓Documentation of pain levels and functional impairment

Commonly Confused Codes