M87.051

HCC Category Mapping

What This Code Means

Death of bone tissue in the right thighbone (femur) without infection, occurring without a known cause. This condition commonly affects the femoral head and can severely limit walking and weight-bearing activities.

Coding Tips

• •Confirm right side is documented; if bilateral, assign codes for both sides separately
• •Note the stage of necrosis if documented (early, intermediate, or advanced) as it may affect clinical management

Clinical Significance

Idiopathic aseptic necrosis of the right femur represents bone death in the thighbone without identifiable cause, commonly affecting the femoral head and severely limiting walking and weight-bearing activities. This condition commonly affects the femoral head and can severely limit walking and weight-bearing activities, often progressing to require hip replacement surgery.

Documentation Requirements

• ✓Documentation of aseptic necrosis specifically affecting right femur
• ✓Confirmation of idiopathic etiology with no underlying cause identified
• ✓Imaging evidence demonstrating bone necrosis in right femoral structures
• ✓Clear laterality documentation specifying right femur involvement
• ✓Exclusion of infectious processes through clinical assessment
• ✓Assessment of hip function, range of motion, and weight-bearing ability
• ✓Treatment plan including conservative management or surgical options
• ✓Documentation of pain and functional limitations in mobility

Commonly Confused Codes