Amends the Illinois Health Insurance Portability and Accountability Act. Defines "grandfathered health plan". Provides that, except for grandfathered health plans, a health insurance issuer in the individual, small group, or large group market shall not deny coverage to an individual or employer due to the individual's or employer's failure to pay premiums owed under a prior policy, certificate, or contract of insurance. Specifies that nothing in the provisions concerning past-due premiums prohibits a health insurance issuer from pursuing the collection of past-due premiums from an individual or employer by any other means permitted by law. Effective immediately.