Spondylolisthesis, lumbosacral region

This code signifies the anterior or posterior displacement of a vertebra relative to the one below it, specifically occurring in the lumbosacral region of the spine. This slippage can result from degenerative changes, congenital defects, or trauma, leading to spinal instability and potential nerve compression.

Apply this code when documentation clearly indicates a diagnosis of spondylolisthesis affecting the L5-S1 vertebral segment. Supporting documentation should include imaging reports (X-ray, MRI, CT) confirming the vertebral displacement and the specific lumbosacral location.

• Differentiate from spondylolysis (M43.0-) which is a defect in the pars interarticularis without displacement.
• Specify the grade of spondylolisthesis if documented, though not required for this code.
• Consider additional codes for associated conditions like radiculopathy (G54.1) or spinal stenosis (M48.06) if present.