The authority shall provide coverage under this chapter for smoking cessation counseling services, as well as prescription and nonprescription agents when used to promote smoking cessation, so long as such agents otherwise meet the definition of "covered outpatient drug" in 42 U.S.C. Sec. 1396r-8(k). However, the authority may initiate an individualized inquiry and determine and implement by rule appropriate coverage limitations as may be required to encourage the use of effective, evidence-based services and prescription and nonprescription agents. The authority shall track per-capita expenditures for a cohort of clients that receive smoking cessation benefits, and submit a cost-benefit analysis to the legislature on or before January 1, 2012.