M87.034

HCC Category Mapping

What This Code Means

Death of bone tissue in the right ulna (forearm bone) without infection, occurring without a known cause.

Coding Tips

• •Verify laterality is documented as right in the medical record before assigning this code
• •Ensure no secondary cause (trauma, radiation, corticosteroid use) is documented; if present, use a different M87 code

Clinical Significance

Idiopathic aseptic necrosis of the right ulna represents bone death in the medial forearm bone without identifiable cause, potentially affecting elbow and wrist stability. This condition can significantly impact forearm rotation and overall arm function, often requiring specialized orthopedic management and possible surgical intervention.

Documentation Requirements

• ✓Documentation of aseptic necrosis specifically involving right ulna bone
• ✓Confirmation of idiopathic etiology with no underlying cause identified
• ✓Imaging evidence showing bone necrosis in right ulnar structures
• ✓Clear laterality documentation specifying right side involvement
• ✓Exclusion of infectious processes through clinical assessment
• ✓Assessment of elbow and forearm function and range of motion
• ✓Treatment plan including conservative or surgical management options
• ✓Documentation of pain levels and functional limitations

Commonly Confused Codes