Medicaid is a health insurance available for those who are in specific income brackets which qualifies them to obtain this government provided insurance coverage. Whether or not someone qualifies for Medicaid doesn't only determined by their earnings however, and people shouldn't presume they don't qualify because they make a good income. For example, people who have a lot of dependents may be entitled to Medicaid even when they make what might be considered a sensible income. Medicaid may also cover the expense of rehabilitation, if someone has been abusing alcohol or drugs and requires rehab. There are numerous drug and alcohol rehabilitation programs which accept Medicaid, but different states have distinct guidelines for what sorts of treatment are covered. Some states only include outpatient rehab services for example while other states cover far more extensive rehab like a residential stay in long-term drug rehab program. If someone is involved with drug use and desires help, they can use their Medicaid insurance coverage to obtain this treatment. If they don't have Medicaid and in addition don't have the money or some other kind of medical insurance to pay for treatment, they can determine if they qualify for Medicaid and then sign up for a drug rehabilitation facility that is approved inside their state.