Injury to lumbar nerve root

This code signifies a traumatic injury affecting one or more nerve roots originating from the lumbar spine. This typically results in symptoms such as pain, numbness, tingling, or weakness in the lower extremities, corresponding to the affected dermatome or myotome. It differentiates from general spinal cord injury by specifically localizing the damage to the nerve roots.

Use this code for diagnoses of nerve root damage in the lumbar region directly attributable to an external force or trauma, such as a fall, motor vehicle accident, or direct impact. Documentation should clearly state "injury" or "traumatic lesion" of a lumbar nerve root, often supported by imaging (MRI, CT) showing nerve compression or damage, and neurological examination findings.

• Differentiate from non-traumatic nerve root compression (e.g., due to disc herniation without acute injury), which would typically fall under different ICD-9 categories.
• Ensure the documentation specifies "lumbar" to avoid confusion with cervical or thoracic nerve root injuries.
• Always sequence an external cause code (E-code) to describe the circumstances of the injury, if known.