📊 Formulary Tiers Explained
Tier 1Generic drugs. Lowest cost-sharing, usually $5 to $20 copay.
Tier 2Preferred brand-name drugs. $30 to $60 copay typically.
Tier 3Non-preferred brands. $60 to $100 copay or 30 to 40 percent coinsurance.
Tier 4Specialty drugs. Often 25 to 33 percent coinsurance. Can exceed $1,000 per month.
Tier 5Select specialty. Highest cost-sharing. Biologics and newer specialty drugs.
The same drug can be Tier 2 on one plan and Tier 5 on another, a difference of hundreds of dollars per month. Always check the formulary before enrolling.
🚫 Your Rights When a Drug Is Denied
1Formulary exception - Request coverage of a non-formulary drug when no formulary alternative is clinically appropriate. Plan must decide within 72 hours (urgent) or 3 business days.
2Step therapy override - If the plan requires failing drug A first, you can override when the required drug is contraindicated, you already failed it, or it will not work for your condition.
3Tier exception - Request a lower tier cost-sharing for a drug on a higher tier when no lower-tier alternative is appropriate for your condition.
4Appeal the PA denial - Prior authorization denials for drugs follow the same appeal rights as medical claim denials. Request the criteria, submit clinical documentation, request expedited review if urgent.
💼 Medicare Part D Key Facts
Six protected drug classes must be covered at all tiers: antidepressants, antipsychotics, anticonvulsants, antiretrovirals, immunosuppressants, antineoplastics.
2025 OOP cap: $2,000. After you spend $2,000 out-of-pocket on Part D drugs in a calendar year, the plan pays 100 percent for the rest of the year. This is new in 2025 and a major improvement.
Low Income Subsidy (Extra Help): If your income is below 150 percent of the federal poverty level, you may qualify for Extra Help, which dramatically reduces Part D premiums and cost-sharing. Apply through SSA at 1-800-772-1213.
Exception requests: standard 72 hours, expedited 24 hours. Always request expedited if you are without medication.
💰 Saving Money on Medications
Manufacturer patient assistance programs (PAPs): Most branded drug manufacturers offer free or reduced-cost drugs for uninsured or underinsured patients who meet income criteria. Search at NeedyMeds.org or RxAssist.org.
GoodRx: Often cheaper than insurance for generic drugs, especially before the deductible is met. Compare GoodRx price vs. your plan copay before filling.
340B program: Qualifying hospitals and clinics receive drugs at significantly discounted prices. Ask your provider if they participate before filling at retail.
Mail-order pharmacy: Most plans offer a 90-day supply at mail-order for significantly less than retail 30-day copays. For maintenance medications, this is almost always the better choice.
Accumulator Adjustment Programs (AAPs): Some plans do not count manufacturer copay cards toward your deductible or OOP max. If your plan has an AAP and you rely on a copay card for a specialty drug, you may face a large bill when the card runs out. Ask HR before enrolling.
🐱 Medicare Part D: Donut Hole and Minimizing Costs
2025: $2,000 OOP cap eliminates the donut hole. Once you spend $2,000 out of pocket on Part D drugs, you pay $0 for the rest of the year.
Minimize costs: Use preferred pharmacies. Use mail-order for 90-day maintenance supplies. Ask about generics. Compare all plans at medicare.gov/plan-compare each open enrollment. Differences can exceed $2,000/year.
Extra Help: If income is below 150% of poverty level, apply at ssa.gov/extrahelp or 1-800-772-1213. Nearly eliminates Part D costs.
Secondary insurance: Medigap does not cover Part D. Medicare Advantage (Part C) often bundles drug coverage. Employer retiree plans may count as creditable coverage. Verify before enrolling in a standalone PDP.
⚖ State Step Therapy Laws: NJ, NY, TX, VA, IL, WA, OR, CT, and MD have explicit step therapy override requirements. Select your state in the sidebar for the specific law and language to cite in your appeal.