Policy must contain entire contract.

AS 21.42.150, under The Insurance Contract..

AS 21.42.150

The policy, when issued, shall contain the entire contract between the parties, and neither the insurer nor its agent or representative, nor a person insured by the policy, may make an agreement as to the insurance that is not expressed in the policy. This section does not prohibit the modification of a policy, after issuance, by written rider or endorsement issued by the insurer.