(1) Inpatient hospital services provided in hospitals located more than 100 miles outside the borders of the state of Montana will be reimbursed 50% of usual and customary billed charges for medically necessary services.

(2) Medicaid reimbursement for inpatient services shall not be made to hospitals located more than 100 miles outside the borders of Montana unless the provider has obtained authorization from the department or its designated review organization prior to providing services. All inpatient services provided in an emergent situation must be authorized within 48 hours.