Illinois prompt pay law dental

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Under 215 ILCS 5/368a(c); 215 ILCS 5/370a, the Illinois payment deadline is 30 days (no format split). Failure to pay within the 30-day period entitles the payee to interest at 9 percent per year "from the 30th day after receipt of such proof of loss to the date of late payment," with amounts under one dollar excused; any required interest payment must itself be made within 30 days after the payment (§368a(c)). Dental applicability: Covered, through the assignment statute. A self-funded private-employer (ERISA) plan is generally beyond this statute's reach and runs on the federal claims-procedure clock instead — but that comes from the courts reading 29 U.S.C. § 1144, not from its text, and it is not categorical: a self-funded governmental or church plan is not an ERISA plan at all, § 1144(b)(6) leaves multiple employer welfare arrangements open to state insurance law, and nothing in § 1144 bars a state from reaching the third-party administrator or the network contract.