Fusion of spine, lumbosacral region

This code signifies an abnormal joining or growing together of vertebrae in the lumbosacral region of the spine. This fusion can be congenital (present at birth) or acquired due to disease, trauma, or surgical intervention, leading to restricted movement and potential neurological compromise.

Apply this code when documentation explicitly states fusion of the lumbosacral spine, whether congenital, pathological, or post-surgical. This includes conditions like congenital block vertebrae, ankylosing spondylitis affecting this region, or complications following spinal fusion surgery. Ensure the medical record specifies the lumbosacral region.

• Differentiate from acquired fusion due to surgical arthrodesis (Z98.1) unless a complication of the fusion itself is being coded.
• Confirm the fusion is specifically in the lumbosacral region; avoid using for fusion isolated to lumbar or sacral segments.
• Code any associated pain or neurological symptoms separately, linking them to the fusion if clinically appropriate.