Medicaid is a type of health insurance which is offered to people in certain low-income tax brackets. Eligibility for Medicaid depends greatly 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 rehab, and there are a lot of drug and alcohol treatment centers throughout the country which are covered through Medicaid. Many drug 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. Individuals who have Medicaid should research which programs cover the greatest amount of treatment for the most amount of time to acquire the full benefits of a Medicaid rehab program.