Anterior cord syndrome at C1, subs

This code signifies a specific neurological deficit resulting from damage to the anterior spinal artery or anterior portion of the spinal cord at the C1 vertebral level. Patients typically present with immediate paralysis, loss of pain and temperature sensation below the lesion, while proprioception and vibratory sensation are preserved. This syndrome is often caused by trauma, disc herniation, or vascular compromise.

Use this code for encounters following the initial treatment of anterior cord syndrome affecting the C1 level of the cervical spinal cord. Documentation should clearly indicate the C1 level involvement and the "subsequent encounter" status, implying ongoing care, follow-up, or treatment for complications. This code is appropriate for rehabilitation visits, medication management, or diagnostic evaluations after the acute phase.

• Ensure documentation specifies "anterior cord syndrome" and not other spinal cord syndromes (e.g., central cord, Brown-Séquard).
• Verify the C1 level involvement; other cervical levels have distinct codes.
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.