Medicare does cover budesonide, but how it’s covered and what you’ll pay depends entirely on which form of the medication you use. Budesonide comes as an inhaler, a nebulizer solution, oral capsules, and a rectal foam, and each one falls under a different part of Medicare with different rules. Here’s how it breaks down.
Nebulizer Solution: Covered Under Part B
If you use budesonide as a liquid solution delivered through a nebulizer, this is one of the more straightforward coverage situations. Medicare Part B (the part that covers medical equipment and outpatient services) treats nebulizers as durable medical equipment and specifically lists budesonide inhalation solution as a covered drug when it’s used to manage obstructive lung disease like COPD or asthma.
To qualify, your prescriber needs to have a face-to-face encounter with you before the nebulizer and medication are delivered. The diagnosis also has to match one of the approved conditions. Once covered, you’ll typically pay 20% of the Medicare-approved amount after meeting your Part B deductible, which is the standard cost-sharing structure for durable medical equipment.
Oral Capsules for Crohn’s and Colitis
Generic oral budesonide capsules, originally sold under the brand name Entocort EC, are commonly prescribed for Crohn’s disease and ulcerative colitis. These fall under Medicare Part D, the prescription drug benefit. Generic budesonide capsules are generally placed on Tier 1 of Part D formularies, which is the lowest cost-sharing tier. That means your copay will typically be modest, often in the range of a few dollars to around $10 depending on your specific plan.
This is one of the most affordable forms of budesonide under Medicare, since generic availability keeps costs low and most plans cover it without requiring prior authorization or step therapy.
Budesonide Inhalers Under Part D
Standalone budesonide inhalers (like Pulmicort Flexhaler) are covered under Part D, but coverage details vary by plan. The bigger issue for many Medicare beneficiaries involves the combination inhaler budesonide-formoterol, sold as Symbicort and now available in generic versions like Breyna. These combination inhalers are a first-line treatment for asthma, yet many Medicare Part D plans make them surprisingly difficult to access.
A 2024 analysis of the five largest standalone Part D plan sponsors found that coverage varies dramatically:
- CVS Health (SilverScript plans): Covers both generic budesonide-formoterol and Breyna on Tier 3, with a quantity limit of 4 inhalations per day.
- UnitedHealthcare (AARP Medicare Rx plans): Does not cover generic budesonide-formoterol at all. Breyna is listed on Tier 3.
- Humana (Walmart Value Rx): Does not cover generic budesonide-formoterol. Breyna sits on Tier 4 and requires step therapy, meaning you’d have to try a cheaper alternative first.
- Centene (Wellcare plans): Does not cover generic budesonide-formoterol. Breyna, Symbicort, and Dulera are on Tier 3.
- Cigna: Breyna on Tier 4 with quantity limits. Generic budesonide-formoterol not covered.
Tier 3 and Tier 4 drugs carry higher copays or coinsurance than generics on Tiers 1 and 2. Many plans also impose quantity limits, typically capping coverage at one inhaler (120 doses) per month. Some plans require step therapy, which means your doctor must document that you tried a preferred alternative, often a different combination inhaler like fluticasone-salmeterol, before the plan will approve budesonide-formoterol.
Rectal Foam for Ulcerative Colitis
Budesonide rectal foam (brand name Uceris) is used to treat mild to moderate ulcerative colitis affecting the lower portion of the colon. This is a more specialized product, and plans that cover it typically impose several conditions. You generally need to be 18 or older, have a confirmed diagnosis of active mild to moderate distal ulcerative colitis, and have already tried and failed oral aminosalicylate therapy and formulary enema options.
Coverage is limited to short-term use for inducing remission, not for ongoing maintenance. Plans typically approve it for about two months, with a maximum quantity of four canisters per six-week treatment course. Because of these restrictions, expect to go through a prior authorization process before your plan will pay for it.
What You’ll Pay Out of Pocket
For any budesonide product covered under Part D, your costs follow the standard benefit structure. In 2026, the maximum plan deductible is $615, though many plans set theirs lower or waive it for certain tiers. After meeting your deductible, you pay 25% coinsurance during the initial coverage stage. Once your total out-of-pocket spending on covered Part D drugs reaches $2,100, you enter catastrophic coverage and pay nothing for covered drugs for the rest of the year.
That $2,100 cap is a significant protection, especially if you’re taking a Tier 3 or Tier 4 inhaler where monthly costs can add up quickly.
Extra Help for Lower-Income Beneficiaries
If your income and resources are limited, Medicare’s Extra Help program (also called the Low-Income Subsidy) can dramatically reduce what you pay for budesonide in any form covered under Part D. With Extra Help, you pay no premium and no deductible. Copays drop to no more than $4.90 for generic drugs and $12.15 for brand-name drugs. Once your total out-of-pocket costs (including payments made on your behalf) reach $2,000, your copays drop to $0 for the rest of the year.
How to Check Your Specific Plan
Because Part D coverage varies so widely between plans, the most reliable way to confirm your budesonide coverage is to check your plan’s formulary directly. You can do this through Medicare’s Plan Finder tool at medicare.gov, which lets you enter your specific medication and see which plans in your area cover it, what tier it’s on, and whether any restrictions like prior authorization or step therapy apply. If your current plan doesn’t cover your form of budesonide or places it on an expensive tier, switching plans during open enrollment (October 15 through December 7 each year) is an option worth considering.
If your plan denies coverage or requires step therapy that doesn’t work for you, your doctor can file a formulary exception request. This asks the plan to cover a non-preferred drug at a lower cost-sharing level or waive a step therapy requirement based on medical necessity.