Ministry of Health and Social Affairs (Sweden) - Is addiction a disease?

Cite DSM-IV to classify as a Psychological Disorder not a disease state

Socialstyrelsen, pdf: Your rights and options in treatment and care of drug addicts

pg 9

(Addiction) This is based on the international DSM-IV system, which is one of two manuals used in medical care and other specialised treatment and care of drug addicts. The other manual is called ICD 10 and is very similar. Contrary to what many people believe, dependence is a more serious condition than addiction.

pg 10

In medical care, addiction and dependence are different diagnoses
In treatment and care of drug addicts, substance addiction is a diagnosis that can be made alongside the diagnosis dependence. You can also be diagnosed as a substance abuser without  having developed an addiction.