Spondylolisthesis, thoracolumbar region

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

Assign this code when documentation clearly indicates a diagnosis of spondylolisthesis affecting the junction between the thoracic and lumbar spine. Supporting documentation should specify the spinal region and may include imaging reports (X-ray, MRI, CT) confirming the vertebral slippage.

• Differentiate from spondylolysis (M43.0-) which is a defect in the pars interarticularis without displacement.
• Specify the exact spinal region (thoracolumbar) as other codes exist for cervical (M43.12), thoracic (M43.14), and lumbar (M43.16) spondylolisthesis.
• Look for documentation of the grade of slippage (e.g., Grade I, II) and any associated neurological deficits, which may require additional codes.