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Dual Diagnosis Capability in Addiction Treatment

The Dual Diagnosis Capability in Addiction Treatment (DDCAT) is an instrument that assesses a providersí ability to provide co-occurring disorder (COD) services. Currently, twenty states are using the DDCAT to guide the development of standardized treatment services for individuals with COD. The instrument, developed by Mark P. McGovern, Ph.D. of Dartmouth University, is endorsed by the U.S. Department of Health and Human Services Substance Abuse and Mental Health Services Administration. There is also a version that is adapted for mental health programs, the Dual Diagnosis Treatment Capability in Mental Health Treatment (DDCMHT) instrument. The DDCAT instruments were validated in substance abuse treatment, mental health treatment, primary care and general medical settings.

Providers self-administer the DDCAT. The results are based upon the providersí answers to a number of questions on a variety of issues concerning:

  • Program Environment
  • Clinical Process: Assessment
  • Clinical Process: Treatment
  • Continuity of Care
  • Program Structure
  • Staffing
  • Training

A DDCAT assessment provides organizations with an objective evaluation of their programís strengths and weaknesses. It identifies specific avenues for change to expand an organizationís COD capability by providing a baseline for the development of action plans.

In FY 2007-08 and 2008-09 ADP conducted a pilot program that tested the DDCAT in California. The programs evaluated covered a wide range of service levels and the results were consistent with the stated purpose of the DDCAT. The final report on the DDCAT Pilot is here.

The DDCAT has been placed in the public domain and is free to use. You may download the DDCAT Index and Manual files (PDF) here:

Dual Diagnosis Capability in Mental Health Treatment

The Dual Diagnosis Capability in Mental Health Treatment (DDCMHT) is also in the public domain and is free to use. You may download the DDCMHT Index and manual (PDF) here:

Additional Information

If you would like more information on the DDCAT and DDCMHT we encourage you to read the linked article and PowerPoint presentation written by Mark P. McGovern, Ph.D., Associate Professor of Psychiatry at Dartmouth Medical School.

ADP staff developed a presentation to provide basic background on the DDCAT and DDCMHT and how they can be used as tools to improve services and prepare for the integration of services with primary health care - Using An Assessment Tool as a Way to Improve COD Services Healthcare Integration