Spondylolisthesis, multiple sites in spine

This code describes the anterior or posterior displacement of a vertebra over the one below it, affecting multiple distinct levels of the spine. It indicates a structural instability where several vertebral segments have slipped out of alignment.

Use this code when documentation clearly specifies spondylolisthesis occurring at more than one spinal level (e.g., L3-L4 and L5-S1). This diagnosis is typically supported by imaging studies such as X-rays, CT scans, or MRI, which confirm the multi-level vertebral slippage.

• Do not use this code if the spondylolisthesis is confined to a single spinal region; instead, use a more specific code from the M43.1- subcategory.
• Always review documentation for the specific spinal levels involved to ensure "multiple sites" is accurately supported.
• Consider sequencing this code with codes for any associated neurological deficits (e.g., radiculopathy, myelopathy) if present.