Medicaid is a form of medical health insurance available for many people who are in specific income brackets which qualifies them to obtain this government provided insurance coverage. Whether or not someone is qualified for Medicaid doesn't only depend on income however, and people shouldn't assume they don't qualify just because they make a reasonable income. For example, individuals who have a lot of dependents may be eligible for Medicaid even if they make what can certainly be a reasonable income. Medicaid can also cover the costs of rehab, if a person has been abusing drugs or alcohol and requires treatment. There are lots of alcohol and drug treatment centers which accept Medicaid, but various states have different rules for what forms of treatment are covered. Some states only cover outpatient rehabilitation services as an example while other states cover more extensive rehab such as a residential stay in long-term drug rehabilitation program. If somebody is involved with drug abuse and desires help, they can use their Medicaid insurance coverage to obtain this help. If they do not have Medicaid and also don't have the cash or another form of health insurance to cover rehab, they can determine if they are eligible for a Medicaid and then sign up for a drug rehab facility which is approved inside their state.