La. R.S. 23:1200.10

If the group self-insurance fund deems the amount of expenses billed to it unreasonable or contrary to the provisions of this Subpart, it may within fifteen days after the receipt of such billing, file a rule in a court of competent jurisdiction upon the commissioner of insurance to test the reasonableness and legality under this Subpart of the amount of expenses billed to it by the commissioner of insurance which rule shall be tried by preference, and upon appeal, shall be given preference in the appellate court, as provided by the laws of this state for other state cases.