The DSM-5, which is the fifth and current version of the DSM, integrates the two DSM-IV disorders, substance abuse and substance dependence, into a single disorder called substance use disorder with mild, moderate, and severe sub-classifications.
Criteria for Diagnosing Substance Use Disorders
Using in larger amounts or for longer than intended
Wanting to cut down or stop using, but not managing to
Spending a lot of time to get, use, or recover from use
Inability to manage commitments due to use
Continuing to use, even when it causes problems in relationships
Giving up important activities because of use
Continuing to use, even when it puts you in danger
Continuing to use, even when physical or psychological problems may be made worse by use
Notes: Fewer than 2 symptoms = no disorder; 2-3 = mild disorder; 4-5 = moderate disorder; 6 or more = severe disorder.