Higher insurance co-payments reduce the use of outpatient and inpatient treatment for alcohol and drug disorders (Lo Sasso and Lyons, 2002, 2004; Stein et al., 2000).
Co-payments for alcohol and drug treatments can inhibit the use of outpatient and inpatient treatment. When co-payments increased from $10 per outpatient session to $20 per session, total treatment utilization declined from 5 to 4 outpatient visits (Lo Sasso and Lyons, 2004). Moreover, increased co-payments were associated with higher rates of readmission to treatment, presumably because the prior treatment ended prematurely (Lo Sasso and Lyons, 2002). Similarly, higher co-payments reduced the use of outpatient services following inpatient detoxification (Stein et al., 2000). Strategies that promote aftercare participation for detoxification patients are generally preferred because of the chronic nature of substance use disorders.