Brown-Sequard syndrome at C1, init

This code signifies Brown-Sequard syndrome resulting from a lesion at the C1 level of the cervical spinal cord. This syndrome is characterized by ipsilateral motor paralysis and loss of proprioception, along with contralateral loss of pain and temperature sensation, below the level of the lesion.

Use this code for a patient presenting with new onset or initial treatment for Brown-Sequard syndrome specifically localized to the C1 spinal cord segment. Documentation should clearly state the diagnosis of Brown-Sequard syndrome and specify the C1 level of involvement, often confirmed by imaging or neurological examination findings.

• Ensure documentation explicitly states "Brown-Sequard syndrome" and "C1 level."
• Verify the encounter is the "initial encounter" for this condition; subsequent encounters will use a different seventh character.
• Distinguish from other spinal cord syndromes or unspecified spinal cord injuries.