This report by the National Association of State Alcohol and Drug Abuse Directors (NASADAD) analyzes data from 37 states on the use of telehealth to expand access to substance use treatment.

From the report:

As the use of telemedicine is becoming more commonplace in health care, many federal, state, and private insurance plans are revamping their policies to include coverage for telemedicine. Medicare reimburses telemedicine services at rates equivalent to face‐to‐face services. The Center for Telehealth and E‐Health Law found that 27 States’ Medicaid Programs are providing at least some reimbursement for telehealth services—the most rapid reimbursement expansion happening in the area of behavioral health. In 2005, the American Telemedicine Association and AMD conducted a phone survey of 72 private insurance programs offering potentially billable telehealth services that found payers reimbursing in at least 25 States. Over 100 private payers currently reimburse for telemedicine services. Still many payers do not reimburse at all.

Full report: http://www.nasadad.org/resource.php?base_id=1948

The National Association of State Alcohol and Drug Abuse Directors, Inc (2009). Telehealth in state substance use disorder (SUD) services.