Spinal instabilities, lumbar region

This code signifies a loss of normal spinal stability in the lumbar region, leading to abnormal movement between vertebrae. This instability can result in pain, neurological symptoms, and functional impairment due to excessive motion or displacement of the vertebral bodies. It encompasses conditions like spondylolisthesis (without fracture) or degenerative instability.

Use this code when documentation clearly indicates a diagnosis of spinal instability specifically affecting the lumbar spine, often identified through dynamic imaging studies (e.g., flexion/extension X-rays). This applies to patients experiencing symptoms directly attributable to the abnormal motion of lumbar vertebrae.

• Always specify the exact lumbar level if documented (e.g., L4-L5, L5-S1) using a more specific code if available.
• Distinguish from spinal stenosis (M48.06) or disc degeneration (M51.36) unless instability is explicitly stated as the primary diagnosis.
• Ensure documentation supports the "instability" component, not just generalized low back pain or degenerative changes.