MMMCAMedicare, Medicaid and Managed Care Analysis Project
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We used the classification approach developed for the MMMCA study to identify most MH/SA conditions recognized as mental disorders, but excluded mental retardation/ developmental delays (American Psychiatric Association, 1994), by examining primary diagnosis codes based on ICD-9-CM.
The MMMCA also created a random sample of approximately equal size of health care claimants with no evidence of MH/SA care for each State.