Through changes in the code of statutes, SOSFS 2009:27 (M), opioid addicts are excluded since March 1 2010 from possibilities to be accepted for substitution treatment. Opiate addicts are solitary admitted for substitution treatment from that date. Opioid addicts are excluded admission for treatment regardless of the fact that they fulfil the ICD-10 diagnosis F.11.2, i.e. opioid/opiate addictive criteria. The alteration in the statutes was carried out in reference to the fact that evidence for this kind of treatment intended for opioid addicts was missing. Both groups i.e. opiate – and opioid addicts, are nevertheless experienced in clinical work , to have extensive problems with addiction, health, social situation along with the risk of premature death.     The purpose with this study is to identify what differences and/or similarities there are in background varieties and the severity of the problems  between the groups. This is conducted with the use of a population (n=127) with comparable background material, e.g. collected Addictions Severe Index- interviews, scientifically survey and compare background factors and the severity of the problems.      The main discovery in this study is that one can demonstrate great similarities between the groups regarding background as well as the severity of the problems. It is therefore of great interest, on a individual as well as a social oriented level, that pursued studies regarding diagnostic safety and on processes in substitution program are needed to generate further knowledge as a foundation for development of future care and changes in the code of statutes.