(a) This chapter does not apply to:
(1) gratuitous nursing care of the sick that is provided by a friend;
(2) nursing care provided during a disaster under the state emergency management plan adopted under § 418.042, Government Code, if the person providing the care does not hold the person out as a nurse unless the person is licensed in another state;
(3) nursing care in which treatment is solely by prayer or spiritual means;
(4) an act performed by a person under the delegated authority of a person licensed by the Texas Medical Board;
(5) an act performed by a person licensed by another state agency if the act is authorized by the statute under which the person is licensed except that if the person also holds a license under this chapter and the act is within the practice of nursing, the board may take action against that license based on that act;
(6) the practice of nursing that is incidental to a program of study by a student enrolled in a nursing education program approved under § 301.157(d) leading to an initial license as a nurse; or
(7) the practice of nursing by a person licensed in another state who is in this state on a nonroutine basis for a period not to exceed 72 hours to:
(A) provide care to a patient being transported into, out of, or through this state;
(B) provide nursing consulting services; or
(C) attend or present a continuing nursing education program.
(b) This chapter does not authorize the practice of medicine as defined by Chapter 151.