Creates the Insulin for All Act. Provides that the Department of Public Health shall offer a discount program that allows participants to purchase insulin at a discounted, post-rebate price. Sets forth provisions concerning an insulin urgent-need program. Provides that by July 1, 2022, each manufacturer shall establish procedures to make insulin available to eligible individuals who are in urgent need of insulin or who are in need of access to an affordable insulin supply. Sets forth provisions concerning insulin urgent-need program exceptions, eligibility, forms, applications, claims and reimbursement, copayments, information sheets, navigators, and penalties. Sets forth provisions concerning an insulin patient assistance program and manufacturer responsibilities and process of the patient assistance program. Sets forth provisions concerning dispute resolution, reports, and penalties for insulin programs. Creates the Insulin Assistance Fund. Defines terms. Amends the Illinois Insurance Code. In provisions concerning cost sharing in prescription insulin drugs, provides that an insurer that provides coverage for prescription insulin drugs under the terms of a health coverage plan the insurer offers shall limit the total amount that an insured is required to pay for a 30-day supply of covered prescription insulin drugs at an amount not to exceed $35 (rather than $100). Makes a conforming change in the State Finance Act. Makes other changes. Effective immediately.