Medicaid is a form of health care insurance available for individuals who are in certain income brackets which qualifies them to obtain 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 make an acceptable income. For instance, people who have quite a few dependents may be entitled to Medicaid regardless of whether they earn what would be described as a fair income. Medicaid may also cover the costs of treatment, if someone has been abusing drugs or alcohol and needs treatment. There are lots of drug rehab centers which accept Medicaid, but various states have distinct rules for what sorts of rehabilitation are covered. Certain states only cover outpatient treatment services for example while other states cover far more intensive rehab like a residential stay in long-term drug rehabilitation program. If someone is involved in drug use and needs help, they are able to use their Medicaid insurance coverage to obtain this treatment. If they don't have Medicaid and in addition don't have the funds or some other kind of health insurance to pay for rehabilitation, they can check if they qualify for Medicaid and then enroll in an alcohol and drug treatment center which is approved within their state.