(a) The institutional division may grant an emergency absence under escort to an inmate so that the inmate may:
(1) obtain a medical diagnosis or medical treatment;
(2) obtain treatment and supervision at a facility operated by the Health and Human Services Commission; or
(3) attend a funeral or visit a critically ill relative.
(b) The institutional division shall adopt policies for the administration of the emergency absence under escort program.

(c) An inmate absent under this section is considered to be in the custody of the institutional division, and the inmate must be under physical guard while absent.
(d) The institutional division may not grant a furlough to an inmate convicted of an offense under § 42.072, Penal Code.