The physician evaluates a 68-year-old new patient who was admitted to observation status earlier today. according to the family, the patient complained about headaches and blurred vision last week and then became confused and disoriented two days ago. the physician performed a comprehensive history and exam, at which time he noted decreased response to light in one eye and bp of 220/100, but the family denied any previously known or treated hypertension. suspicious for increased intracranial pressure, medical decision making is listed as high complexity. the patient had a cat scan of the brain without contrast which was positive for brain lesions. an a-scan bilateral ophthalmology biometry was then performed, and patient was sent to the radiology department for simple therapeutic radiology treatment planning.