Figure 1. Classification Algorithm for Suspected Substance Use Disorder, or Physical or Mental Disorder

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1.	Is the issue substance or alcohol related?
a.	If yes, then ask
i.	Are 2 or more DSM criteria met for a substance use disorder?
1.	If yes, then ask
a.	Is the substance on the Controlled Substances List?
i.	If yes, then
1.	Applicant is Class A
ii.	If no, then ask
1.	Is current harmful behavior present or has there been previous harmful behavior that has been judged likely to recur?
a.	If yes, then
i.	Applicant is Class A
b.	If no, then
i.	Applicant is Class B
2.	If no, then
a.	Applicant is no class
3.	If there is insufficient information for diagnosis, then
a.	Defer for 3-6 months with an opportunity to show abstinence or obtain additional information
b.	If no, then ask
i.	Is DSM criteria met for a diagnosis?
1.	If yes, then ask
a.	Is current harmful behavior present or has there been previous harmful behavior that has been judged likely to recur?
i.	If yes, then
1.	Applicant is Class A
ii.	If no, then
1.	Applicant is Class B
2.	If no, then
a.	Applicant is no class