2019 Tier Labels and Hierarchy Non-Defined Standard Part D Plans 2019 Tier Label 2019 Tier Structure 2019 Option Tier 1 Tier 2 Tier 3 Tier 4 Tier 5 Tier 6 2 Tiers A Generic Brand --- --- --- --- B Generic Preferred Brand --- --- --- --- 3 Tiers A Generic Brand Specialty Tier --- --- --- B Generic Preferred Brand Specialty Tier --- --- --- C Generic Preferred Brand Non-Preferred Brand --- --- --- D Preferred Generic Preferred Brand Non-Preferred Drug --- --- --- E Generic Preferred Brand Non-Preferred Drug --- --- --- 4 Tiers A Generic Preferred Brand Non-Preferred Brand Specialty Tier Optional * --- B Preferred Generic Generic Preferred Brand Non-Preferred Brand Optional * --- C Preferred Generic Generic Preferred Brand Specialty Tier Optional * --- D Generic Preferred Brand Non-Preferred Brand Injectable Drugs Optional * --- E Preferred Generic Preferred Brand Non-Preferred Drug Specialty Tier Optional * --- F Preferred Generic Preferred Brand Non-Preferred Drug Injectable Drugs Optional * --- G Preferred Generic Generic Preferred Brand Non-Preferred Drug Optional * --- H Generic Preferred Brand Non-Preferred Drug Specialty Tier Optional * --- New for CY2019 I Generic Preferred Brand Non-Preferred Drug Injectable Drugs Optional * --- New for CY2019 5 Tiers A Preferred Generic Generic Preferred Brand Non-Preferred Brand Specialty Tier Optional * B Preferred Generic Generic Preferred Brand Non-Preferred Brand Injectable Drugs Optional * C Preferred Generic Generic Preferred Brand Injectable Drugs Specialty Tier Optional * D Generic Preferred Brand Non-Preferred Brand Injectable Drugs Specialty Tier Optional * E Preferred Generic Preferred Brand Non-Preferred Drug Injectable Drugs Specialty Tier Optional * F Preferred Generic Generic Preferred Brand Non-Preferred Drug Specialty Tier Optional * G Preferred Generic Generic Preferred Brand Non-Preferred Drug Injectable Drugs Optional * H Generic Preferred Brand Non-Preferred Drug Injectable Drugs Specialty Tier Optional * New for CY2019 6 Tiers A Preferred Generic Generic Preferred Brand Non-Preferred Brand Injectable Drugs Specialty Tier B Preferred Generic Generic Preferred Brand Non-Preferred Drug Injectable Drugs Specialty Tier Formerly 6C for CY2018 "*The optional 5th or 6th tier can be used as an excluded-drug-only tier or for other meaningful offerings such as a $0 vaccine-only tier, Select Care or Select Diabetes Drugs."