Will Medicare Cover Drug Rehab? 
Medicare can help pay for drug abuse treatment in both the inpatient and outpatient settings . Inpatient settings would be covered by Part A and outpatient settings would be covered by Part B . The services must be medically necessary and completed at a facility/with a provider that accepts Medicare . Medicare would cover about 80 % of the costs and you would be responsible for the other 20 % - a medigap plan may be able to cover the other 20 % for you . 