Medicaid is a type of medical health insurance available for individuals who are in certain income brackets which qualifies them to receive this government funded insurance. Whether or not someone is qualified for Medicaid doesn't only depend on their earnings however, and individuals shouldn't presume they don't qualify simply because they earn a fair income. For example, people who have many dependents may be eligible for Medicaid even when they earn what might be described as a sensible income. Medicaid may also cover the expense of rehab, when someone has been abusing drugs or alcohol and needs treatment. There are many drug rehabilitation programs which accept Medicaid, but different states have different guidelines for what forms of rehabilitation are covered. Certain states only cover outpatient treatment services for instance while other states cover more intensive treatment like a residential stay in long-term drug rehab facility. If someone is involved in substance abuse and needs help, they're able to use their Medicaid health coverage to get this help. If they don't have Medicaid plus don't have enough cash or any other form of health insurance to pay for rehab, they could see if they qualify for Medicaid and then enroll in a drug and alcohol treatment facility that is approved in their state.