Medicaid is a health care insurance available for individuals who are in specific income brackets which qualifies them to receive this government funded insurance. Whether someone qualifies for Medicaid doesn't only depend upon income however, and people shouldn't presume they don't qualify because they earn an acceptable income. As an example, individuals who have many dependents may qualify for Medicaid even if they earn what might be described as a sensible income. Medicaid could also cover the expenses of treatment, when someone has been abusing alcohol or drugs and requires rehab. There are many alcohol and drug treatment programs which accept Medicaid, but various states have distinct guidelines for what sorts of treatment are covered. Some states only cover outpatient treatment services for example while other states cover far more intensive rehabilitation like a residential stay in long-term drug and alcohol rehab facility. If anyone is involved in substance abuse and needs help, they could use their Medicaid health coverage to get this treatment. If they don't have Medicaid and also don't have the money or another type of medical insurance to cover treatment, they could determine if they are eligible for a Medicaid and then enroll in a drug and alcohol rehab program that's approved inside their state.