Medicaid is a form of medical insurance available for individuals who are in certain income brackets which qualifies them to obtain this government funded insurance. Whether a person qualifies for Medicaid doesn't only depend upon their earnings however, and people shouldn't presume they don't qualify just because they make a reasonable income. For example, individuals who have many dependents may be entitled to Medicaid regardless of whether they make what might be considered a reasonable income. Medicaid can also cover the expense of treatment, if someone has been abusing alcohol or drugs and needs rehabilitation. There are several alcohol and drug rehabilitation facilities which accept Medicaid, but various states have distinct rules for what kinds of rehab are covered. Certain states only include outpatient treatment services for instance while other states cover far more extensive rehabilitation like a residential stay in long-term drug rehab center. If somebody is involved with substance abuse and needs help, they could use their Medicaid insurance coverage to obtain this treatment. If they don't have Medicaid and also don't have the funds or some other kind of health insurance to pay for rehab, they could determine if they qualify for Medicaid and then sign up for a drug rehab facility that's approved within their state.