M87.042

HCC Category Mapping

What This Code Means

Death of bone tissue in the left hand (excluding fingers) without infection, occurring without a known cause.

Coding Tips

• •Distinguish between hand proper and finger involvement; use finger codes if digits are affected
• •Verify left side is clearly documented in clinical or imaging records

Clinical Significance

Idiopathic aseptic necrosis of the left hand involves bone death in metacarpal structures without known cause, potentially severely compromising hand function and grip strength. This serious condition often requires specialized hand surgery evaluation and may necessitate surgical intervention to preserve hand function and prevent further bone collapse.

Documentation Requirements

• ✓Clear documentation of aseptic necrosis involving left hand bones
• ✓Confirmation of idiopathic nature without identifiable underlying cause
• ✓Radiological evidence demonstrating bone necrosis in left hand metacarpals
• ✓Specific laterality documentation indicating left hand involvement
• ✓Clinical exclusion of infectious etiology
• ✓Functional assessment of left hand mobility, grip, and dexterity
• ✓Treatment approach documentation including conservative or surgical management
• ✓Pain assessment and impact on activities requiring hand function

Commonly Confused Codes