Neb. Rev. St § 44-6829 (2)

(2) If a treating physician or other emergency department personnel who have provided emergency services to a covered person determine that additional medically necessary services are promptly needed by the covered person and they have requested health carrier approval for such services, the health carrier is deemed to have approved the request if the treating physician or other emergency department personnel involved:

(a) Has made a reasonable effort to contact the individual at the health carrier authorized to approve such requests and the health carrier has not provided access to that individual; or

(b) Has requested authorization from the individual at the health carrier authorized to approve such requests and the individual has not denied authorization within thirty minutes after the time the request was made, unless the health carrier can document that it had made a good faith effort but was unable to reach the emergency physician within thirty minutes after receiving a request for authorization.

A request which is deemed approved under this subsection shall be treated as approval for any medically necessary covered benefits that are required to treat the medical condition identified by the treating physician or other emergency department personnel.