The New Mexico Health Care Authority (HCA) makes the decision about which drugs will be covered for the Medicaid program. BCBSNM is required to cover drugs that are on the HCA Preferred Drug List (PDL). In most cases only the drugs on the list are covered. A prescription drug list is sometimes called a formulary. Drugs are evaluated based for benefit, safety, and cost before including them on the list. Your doctor should consult the Preferred Drug List when prescribing drugs for you.