15 Miss. Code R. § 16-1-46.32.1
Each home health agency shall establish policies and procedures for assuring that services and items to be provided are specified under a plan of treatment established and regularly reviewed by the physician, podiatrist, nurse practitioners, physician assistants, or clinical nurse specialists, who is responsible for the care of the patient. Other agency personnel shall have input into the development of the plan of treatment as deemed appropriate by the physician, podiatrist, nurse practitioners, physician assistants, or clinical nurse specialists. The original plan of treatment shall be signed by the physician, podiatrist, nurse practitioners, physician assistants, or clinical nurse specialists, who is responsible for the care of the patient and incorporated in the record maintained by the agency for the patient. The total plan is reviewed by the attending physician, podiatrist, nurse practitioners, physician assistants, or clinical nurse specialists in consultation with agency professional personnel at such intervals as the severity of the patient's illness requires but, in any instance, at least once every two (2) months. The registered nurse, and other health professional shall bring to the attention of the physician, podiatrist, nurse practitioners, physician assistants, or clinical nurse specialists changes in the patient's condition which indicate the need for altering the treatment plan or for terminating services. No medication, treatment or services shall be given except on signed order of a person lawfully authorized to give such an order.
15 Miss. Code. R. § 16-1-46.32.1