I have a court order to keep my child on my health insur. My ex has placed him on medicaid and I just found out. What can I do?

I am concerned I may be penalized by my insurance company or the state. I received a letter from my insurance company over a year ago asking did my child have any additional insurance. I asked my ex and was told "no." I reported "no" to my carrier. Just recently I found out about the medicaid insurance. - Is this your question? Add additional information