Spondylolisthesis, sacral and sacrococcygeal region

This code describes the anterior displacement of a vertebra in the sacral or sacrococcygeal region relative to the vertebra below it. This condition is a type of spinal instability often resulting from congenital defects, degenerative changes, or trauma affecting the pars interarticularis or facet joints.

Use this code when documentation clearly indicates spondylolisthesis specifically affecting the sacrum or the sacrococcygeal junction. This diagnosis is typically supported by imaging studies such as X-rays, CT scans, or MRI, confirming the vertebral slippage in this anatomical region.

• Ensure the documentation specifies the sacral or sacrococcygeal region; avoid using this code for other spinal levels.
• Distinguish from spondylolysis (M43.0-) which is a defect in the pars interarticularis without displacement.
• Look for associated conditions like radiculopathy or myelopathy, which would require additional codes.