A certified dietitian-nutritionist may write an order for a patient diet, including, but not limited to, a therapeutic diet for a patient in an institution, as defined in section 19a-490. The certified dietitian-nutritionist shall write such order in the patient’s medical record. Any order conveyed under this section shall be acted upon by the institution’s nurses and physician assistants with the same authority as if the order were received directly from a physician or an advanced practice registered nurse. Nothing in this section shall prohibit a physician or an advanced practice registered nurse from conveying a verbal order for a patient diet to a certified dietitian-nutritionist, which verbal order shall be reduced to writing and countersigned by a physician or advanced practice registered nurse not later than seventy-two hours after being conveyed, unless otherwise provided by state or federal law.