Hello its a good idea put a photo of your ankle to see if is necesary a refracture or osteotomy.
Since Medicaid is partially funded by federal monies and partly by state monies, the rules vary from state to state. A Medicaid eligibility counselor in your state can probably answer your question re: reimbursement for a second opinion. Many hospitals have nursing hotlines that you can call for basic medical advice and you can actually speak to an RN. Try your local hospitals and ask for the social workers' offices - they are usually really good sources of information on hospital services and may be able to answer your Medicaid question as well.
Good luck!