What Your Prescriptions Cost
How much does Imbruvica cost with Medicare in 2026?
Last reviewed: · Big Sioux Benefits Data Desk
Imbruvica has a Medicare-negotiated price of $9,319 for a 30-day supply as of January 1, 2026, down from a list price of $14,934, a 38% reduction (CMS, Negotiated Prices for Initial Price Applicability Year 2026). That 38% is the smallest discount among the ten negotiated drugs. About 17,000 Medicare beneficiaries used it in 2023, the smallest group of the ten, generating $2.4 billion in Part D gross covered drug costs.
The qualifier: for a blood cancer drug at this price, the negotiated price barely affects the patient's own math. Your first fill of the year alone carries you through the deductible and past the $2,100 out-of-pocket cap, so your entire annual cost for covered Part D drugs is $2,100 regardless of whether the drug costs $9,319 or $14,934 a month. The negotiation saves Medicare enormous sums; what it saves you individually is limited by the fact that the cap was already going to bind.
How the year plays out
| Month | What you pay | Running out-of-pocket total |
|---|---|---|
| 1 | Deductible plus cost sharing, until the cap binds | $2,100, cap reached on the first fill |
| 2 through 12 | $0 for covered drugs | $2,100 |
How this illustration is built: the 2026 standard Part D benefit, meaning a full $615 deductible, then 25% coinsurance, then $0 once your out-of-pocket total reaches $2,100. Your plan may use copays instead of coinsurance, may charge a smaller deductible or none, and may place the drug on a different tier, so treat this as the shape of the year rather than a quote. We are not showing plan-specific copays because we will not publish a number we cannot source.
This is the clearest illustration of what the out-of-pocket cap changed. Before 2025 a patient on this drug faced cost sharing every month with no ceiling, which is why cancer drugs drove so many people to abandon treatment on cost grounds. In 2026 the entire year is $2,100, and it is all payable in January, which is precisely the case the Medicare Prescription Payment Plan was designed for. Set it up before January if you can.
Sources
- CMS — Medicare Drug Price Negotiation Program: Negotiated Prices for Initial Price Applicability Year 2026 — prices effective January 1, 2026; accessed 2026-08-21
- CMS — Announcement of Calendar Year 2026 Medicare Advantage Capitation Rates and Part C and Part D Payment Policies (Part D benefit parameters) — CY2026 parameters; accessed 2026-08-21
- Medicare.gov — Costs for Medicare drug coverage — accessed 2026-08-21
Related questions
Why was Imbruvica's discount smaller than the other drugs?
CMS negotiated each drug individually against the statutory factors, which include evidence on therapeutic alternatives, research and development costs, and production costs. Drugs with fewer clinical alternatives generally landed at shallower discounts. CMS publishes the process and the resulting prices, but not a drug-by-drug rationale.
If I hit the cap in January, is the whole year really free?
For covered Part D drugs, yes: your cost sharing is $0 once your out-of-pocket total reaches $2,100, for the remainder of the calendar year. You continue to pay your plan premium, drugs billed under Part B follow separate rules, and the total resets each January 1.
Drug costs turn on your specific prescriptions, so the arithmetic is worth doing once, properly: book a free, no-pressure conversation, see your county's South Dakota plan lineup, or browse all answers. SHIINE, the state's free counseling program, is at 1-800-536-8197 and sells nothing.
Big Sioux Benefits is a licensed insurance agency, not affiliated with or endorsed by the U.S. government or the federal Medicare program. We do not offer every plan available in your area. Contact Medicare.gov, 1-800-MEDICARE, or SHIINE (South Dakota's SHIP) for all of your options.