215 ILCS 205/5
As used in this Act:
"Authorized insurer" means an insurer that is authorized by the Department of Insurance to write insurance under a certificate of authority issued by the Department of Insurance to transact insurance in this State.
"Department" means the Department of Insurance.
"National Flood Insurance Program" means the program of flood insurance coverage and floodplain management administered under the National Flood Insurance Act of 1968 ( 42 U.S.C. 4001 et seq.) and applicable federal regulations promulgated in Title 44 of the Code of Federal Regulations.
"Primary residential flood insurance" means an insurance policy covering losses from flood to residential property, other than commercial property insurance, written in this State by any insurer authorized to do business that is not written to apply coverage in excess of the coverage provided under another flood insurance policy, whether issued by a private insurer or the National Flood Insurance Program.
215 ILCS 205/5