Medicaid is a kind of health insurance available for individuals who are in specific income brackets which qualifies them to obtain this government funded insurance. Whether an individual qualifies for Medicaid doesn't only determined by income however, and individuals shouldn't assume they don't qualify because they earn a reasonable income. As an example, individuals who have many dependents may be entitled to Medicaid even if they make what would be described as a reasonable income. Medicaid may also cover the costs of rehab, if someone has been abusing alcohol or drugs and requires rehabilitation. There are many drug treatment centers which accept Medicaid, but various states have different guidelines for what sorts of treatment are covered. Some states only cover outpatient rehab services for example while other states cover far more extensive rehabilitation say for example a residential stay in long-term alcohol and drug rehab facility. If somebody is involved in drug use and needs help, they are able to use their Medicaid health coverage to acquire this help. If they don't have Medicaid plus don't have enough cash or some other form of health insurance to cover rehab, they could find out if they qualify for Medicaid and then enroll in a drug rehab program which is approved inside their state.