Medicaid is a health insurance available for those who are in certain income brackets which qualifies them to acquire this government funded insurance coverage. Whether someone qualifies for Medicaid doesn't only depend on income however, and people shouldn't presume they don't qualify just because they make a good income. For instance, people who have quite a few dependents may be entitled to Medicaid even though they make what can be considered a sensible income. Medicaid also can cover the expenses of treatment, if someone has been abusing alcohol or drugs and requires rehabilitation. There are numerous drug rehab centers which accept Medicaid, but different states have different rules for what types of rehabilitation are covered. Certain states only cover outpatient rehab services for example while other states cover far more intensive treatment like a residential stay in long-term drug and alcohol rehab program. If anyone is involved with drug abuse and needs help, they're able to use their Medicaid health coverage to get this treatment. If they don't have Medicaid and also don't have the funds or some other form of medical insurance to pay for rehab, they could see if they qualify for Medicaid and then sign up for a drug and alcohol treatment program which is approved inside their state.