Brown-Sequard syndrome at C4, subs

This code signifies Brown-Sequard syndrome affecting the C4 level of the cervical spinal cord. This syndrome is characterized by hemisection of the spinal cord, resulting in ipsilateral motor paralysis and loss of proprioception, and contralateral loss of pain and temperature sensation below the level of the lesion.

Apply this code for follow-up encounters where a patient is receiving active treatment for Brown-Sequard syndrome specifically localized to the C4 cervical level. Documentation should clearly indicate the diagnosis, the specific C4 level involvement, and that the encounter is not for the initial injury but for ongoing care.

• Ensure documentation specifies "Brown-Sequard syndrome" and not just a general spinal cord injury.
• Verify the laterality of symptoms and the specific C4 level of the cervical spinal cord.
• The "D" seventh character indicates a subsequent encounter for active treatment; use "A" for initial encounters and "S" for sequela.