Medicaid is a medical health insurance available for many people who are in certain income brackets which qualifies them to receive this government provided insurance. Whether or not somebody qualifies for Medicaid doesn't only depend on their earnings however, and people shouldn't assume they don't qualify because they make a reasonable income. For example, people who have a lot of dependents may be entitled to Medicaid even if they make what might be considered a sensible income. Medicaid also can cover the expense of rehab, if someone has been abusing drugs or alcohol and requires treatment. There are numerous drug treatment facilities which accept Medicaid, but various states have different guidelines for what kinds of treatment are covered. Some states only include outpatient rehabilitation services for instance while other states cover more extensive treatment say for example a residential stay in long-term alcohol and drug treatment program. If someone is involved in drug abuse and desires help, they could use their Medicaid insurance coverage to obtain this treatment. If they don't have Medicaid and in addition don't have enough cash or another kind of health insurance to pay for treatment, they could see if they qualify for Medicaid and then sign up for a drug and alcohol treatment center that's approved in their state.