Medicaid is a kind of medical insurance available for those who are in certain income brackets which qualifies them to receive this government funded insurance coverage. Whether somebody qualifies for Medicaid doesn't only determined by income however, and people shouldn't assume they don't qualify just because they make a reasonable income. As an example, people who have many dependents may be eligible for Medicaid even when they earn what can be considered a reasonable income. Medicaid could also cover the price of treatment, if someone has been abusing drugs or alcohol and requires rehab. There are many alcohol and drug rehabilitation centers which accept Medicaid, but different states have different rules for what kinds of rehab are covered. Certain states only include outpatient treatment services for example while other states cover far more extensive treatment say for example a residential stay in long-term drug and alcohol treatment center. If someone is involved in substance abuse and desires help, they're able to use their Medicaid insurance coverage to get this treatment. If they don't have Medicaid and also don't have enough cash or some other type of health insurance to pay for rehabilitation, they could check if they are eligible for a Medicaid and then sign up for a drug rehabilitation facility that's approved within their state.