# Medicare Part D Tier Changes Could Significantly Impact Prescription Costs How shifting drug tiers in 2025 may affect retirees' medication budgets. - **Source:** [SavingAdvice.com Blog](https://brifing.si/source/0a5be9fd-36c9-42ed-8bc4-90f6e843d3b4) - **Published:** 2026-09-14 - **Topic:** [Finance](https://brifing.si/c/finance) - **Original article:** - **On Brifing:** https://brifing.si/s/c753ef3a-3d08-4ddd-a45a-db8b0a277dc4 ## Tier changes affect actual costs Medicare Part D plans can reassign drugs to different cost-sharing tiers annually, potentially increasing out-of-pocket expenses even for unchanged medications. A drug moving from a $10 to $45 copay tier costs $420 more annually when taken monthly. Tier structures vary by plan, typically placing generics on Tier 1, preferred brands on Tier 2, and specialty drugs on higher tiers. Beneficiaries should review Annual Notices of Change carefully, as tier adjustments often impact budgets more than premium changes. ## Calculate annual, not monthly costs Small copay increases compound significantly over a year. Two medications moving from $10 to $45 copays create nearly $1,000 in additional annual costs. Coinsurance changes are harder to predict as they're percentage-based. The Medicare Plan Finder tool helps project total yearly expenses including premiums, deductibles, and pharmacy-specific pricing. Comparing plans requires entering exact medication names, dosages, and fill frequencies, as costs vary even for different versions of the same drug. ## Low premiums don't mean low costs $0-premium plans may have higher tier placements that negate savings. Total costs include premiums, deductibles, copays, coinsurance, and pharmacy network variations. Saving $180 annually on premiums loses value if tier changes add $600 in medication costs. Some plans offer preferred pharmacy networks with lower pricing. Out-of-network purchases don't count toward deductibles or out-of-pocket maximums, making cash prices potentially more expensive long-term. ## Explore therapeutic alternatives Tier changes warrant medication reviews with healthcare providers. FDA-approved generics and biosimilars often provide identical treatment at lower tiers. Doctors can identify therapeutically equivalent drugs that a plan may place on preferred tiers. Never self-substitute medications due to cost changes without medical consultation. Bring the new formulary to appointments to discuss clinically appropriate, lower-cost alternatives. ## Tiering exception process Beneficiaries or prescribers can request exceptions to charge lower-tier copays when medically necessary. Doctors must document why preferred alternatives aren't suitable. Unlike formulary exclusions, tiered drugs remain covered but cost more. Approval isn't guaranteed, so budgeting shouldn't assume exceptions. The process is most valuable when tier changes make essential medications unaffordable. ## Catastrophic coverage protections Part D's 2026 out-of-pocket cap limits spending to $2,100 annually before catastrophic coverage begins. The Prescription Payment Plan spreads costs throughout the year without reducing totals. These protections help manage cash flow but don't lower tier-based pricing. Beneficiaries should understand both annual caps and interim payment requirements when evaluating tier changes. ## Annual plan comparison necessity Last year's optimal plan rarely remains the best choice after tier adjustments. All cost components—formularies, premiums, deductibles, pharmacy networks—can change annually. CMS finalizes 2027 plan details before Open Enrollment. State Health Insurance Assistance Programs (SHIPs) offer free, unbiased counseling for complex comparisons. Creating a complete medication list ensures accurate cost projections. ## Proactive financial planning Medicare beneficiaries taking multiple medications should treat tier changes as significant financial events. A single tier adjustment can cost more than annual premium savings. Strategic planning includes evaluating therapeutic alternatives, exception possibilities, payment plans, and annual plan comparisons. Proactive review during Open Enrollment (October 15-December 7) helps avoid unexpected cost spikes in January. ## Sources covering this story - https://www.savingadvice.com/articles/2026/09/14/10746861_that-prescription-is-moving-to-a-different-tier-next-year-what-could-it-cost.html — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._