Medicaid is a medical health insurance available for many people who are in certain income brackets which qualifies them to receive this government funded insurance. 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 earn a fair income. As an example, individuals who have a lot of dependents may be eligible for Medicaid regardless of whether they earn what can be considered a reasonable income. Medicaid may also cover the expenses of rehab, if someone has been abusing drugs or alcohol and requires rehab. There are several drug rehabilitation programs which accept Medicaid, but different states have different guidelines for what sorts of treatment are covered. Some states only cover outpatient treatment services for instance while other states cover far more intensive rehabilitation like a residential stay in long-term drug rehabilitation facility. If someone is involved with drug use and needs help, they're able to use their Medicaid insurance coverage to acquire this treatment. If they don't have Medicaid and in addition don't have the funds or some other form of health insurance to cover rehab, they can determine if they are eligible for a Medicaid and then sign up for a drug and alcohol rehabilitation facility that is approved within their state.