Brown-Sequard syndrome at C4, sequela

This code signifies a chronic or residual neurological deficit consistent with Brown-Sequard syndrome, specifically affecting the C4 level of the cervical spinal cord. Brown-Sequard syndrome is characterized by ipsilateral motor paralysis and loss of proprioception/vibration, with contralateral loss of pain and temperature sensation, resulting from hemisection of the spinal cord. The "sequela" designation indicates that this is a late effect of an injury or other condition.

Use this code for patients presenting with persistent Brown-Sequard syndrome symptoms localized to the C4 spinal cord level, where the initial acute injury or condition has resolved. Documentation should clearly state the diagnosis of Brown-Sequard syndrome, specify the C4 level, and indicate that the condition is a long-term consequence or residual effect. This code is appropriate when the patient is no longer in the acute phase of treatment for the original injury.

• Ensure documentation explicitly links the Brown-Sequard syndrome to a previous injury or condition, justifying the "sequela" designation.
• Verify the specific spinal cord level (C4) is clearly documented; other levels have different codes.
• Do not use this code for acute Brown-Sequard syndrome; instead, use the appropriate acute injury code.