Medicaid is a type of health insurance which is made available to people in certain low-income tax brackets. Eligibility for Medicaid is dependent on income and other circumstances including whether or not the individual has dependents and if they receive any other assistance. Medicaid may even cover the costs associated with drug rehabilitation, and there are many drug and alcohol rehabilitation centers throughout the country which are covered through Medicaid. Many drug and alcohol rehab facilities which are covered through Medicaid may only provide a limited treatment curriculum and may only supply such treatment on a short term basis, usually 30 days or less. People who have Medicaid should research which programs cover the greatest amount of treatment for the most amount of time to reap the full rewards of a Medicaid rehab program.