"Order" means a written instruction to pay money signed by the person giving the instruction. The instruction may be addressed to any person, including the person giving the instruction, or to one or more persons jointly or in the alternative but not in [...]

"Order" means to select a drug, medical treatment, or diagnostic study through physician delegation in accordance with a nurse protocol or a physician's assistant's job description. Ordering under such delegation shall not be construed to be prescribing, [...]