• 1 - A condition where surgery has been performed (Surgical code)
• 2 - A condition where no surgery has been performed (non-surgical code)
  • 4 - Neurological (including eyes)
    • 1 - Head, neck (extracranial) or eyes
      • 41 - Vascular
        • 1 - Carotid or vertebral artery stenosis or occlusion
        • 3 - Traumatic rupture or puncture of carotid or vertebral artery
        • 4 - Instrumental damage to carotid or vertebral artery
        • 5 - Extracranial or neck arterio-venous malformation or haemangioma
        • 6 - Vasculitis of cerebral circulation
        • 7 - Vascular lesion of eyes
        • 8 - Traumatic carotid or vertebral artery aneurysm or dissection
        • 9 - Non-traumatic carotid or vertebral artery aneurysm or dissection