Ketan, The State of Illinois had a policy through Cigna for some state employees. It was self funded, but Cigna did the administration. Because it WAS NOT funded and the bills have not been paid, Cigna must pay interest on those claims ( and probably bill the state which has probably not paid for that. ) That's why you're getting the small checks.
Government insurance is exempt from paying interest if they are late in paying That's why Medicaid traditionally could be slow in paying.