Medicaid is a form of medical insurance available for those who are in certain income brackets which qualifies them to receive this government funded insurance coverage. Whether or not a person qualifies for Medicaid doesn't only depend on their earnings however, and people shouldn't assume they don't qualify just because they earn an acceptable income. For instance, people who have many dependents may be eligible for Medicaid regardless of whether they earn what can be considered a sensible income. Medicaid can also cover the costs of treatment, if a person has been abusing alcohol or drugs and requires rehabilitation. There are lots of alcohol and drug rehab centers which accept Medicaid, but various states have distinct rules for what forms of rehabilitation are covered. Some states only cover outpatient treatment services as an example while other states cover more extensive rehab like a residential stay in long-term alcohol and drug rehab center. If someone is involved with substance abuse and desires help, they can use their Medicaid insurance coverage to obtain this help. If they don't have Medicaid and also don't have the funds or another form of health insurance to cover rehab, they could check if they are eligible for a Medicaid and then enroll in a drug and alcohol rehabilitation center that's approved in their state.