When benefits are provided under this chapter, the benefits shall provide for a minimum of 30 days of inpatient treatment or its equivalent per calendar year with the equivalency to be computed based on a formula which equates two days of treatment in a short term residential alcoholism treatment facility to one day of inpatient treatment and which equates three sessions of outpatient treatment by a licensed doctor of medicine or an alcoholism treatment facility to one day of inpatient treatment.
Ala. Code § 27-20A-4 (1975)