The Part D weight-loss exclusion
The law that created Part D lets plans exclude drugs used for weight loss, weight gain or cosmetic purposes. So a drug prescribed only to lose weight isn't covered as a regular Part D benefit, even with a doctor's order. The same drug can be covered when it's prescribed for another medically accepted use.
When your Part D plan may cover a GLP-1
- Type 2 diabetes: Ozempic, Mounjaro, Rybelsus and similar drugs, if they're on your plan's formulary.
- Heart disease risk: Wegovy to lower the risk of heart attack and stroke in people with heart disease and obesity or overweight.
- Sleep apnea and fatty liver disease: Medicare.gov says your plan might cover GLP-1s for moderate to severe obstructive sleep apnea or fatty liver disease.
Coverage depends on each plan's formulary, and plans often require prior authorization. Your covered costs count toward the Part D cap, $2,100 in 2026. Semaglutide (Ozempic, Rybelsus and Wegovy) is one of the 15 drugs with a Medicare negotiated price taking effect January 1, 2027.
The Medicare GLP-1 Bridge (July 2026 – December 2027)
CMS runs the Bridge as a short-term demonstration outside the regular Part D benefit. It covers Wegovy (injection or tablet), Zepbound (KwikPen only) and Foundayo for weight management, with a fixed copayment for each month's supply set by Medicare. To use it:
- Have Medicare drug coverage. A Part D plan or a Medicare Advantage plan with drug coverage, including most special needs and employer plans.
- Ask your prescriber. They send the prescription, complete the prior authorization and certify you're using it with a diet and exercise program.
- Fill it at your pharmacy. You'll get a letter confirming Bridge coverage, which lasts through December 31, 2027.
CMS has delayed the longer-term BALANCE model in Part D with no new start date, so coverage for weight loss alone after 2027 isn't settled.
Choosing a plan in Oregon
For 2027, Oregon has 8 standalone Part D plans and 61 Medicare Advantage plans open to everyone in some part of the state. Formularies and prior authorization rules differ, so check your exact drug before Open Enrollment ends on December 7. You can check drugs at PlanMatch or request a call from a licensed insurance agent. More on single drugs: Wegovy, Ozempic and other drug coverage pages.
Related questions
What is the Part D out-of-pocket cap for 2027?
Next year's drug cost limit.
What is the Medicare Prescription Payment Plan?
Paying drug costs monthly.
How much is insulin with Medicare?
The monthly insulin limit.
Sources
- Medicare.gov — Weight loss drugs (Medicare GLP-1 Bridge)
- CMS — BALANCE Model and Medicare GLP-1 Bridge
- CMS — Selected drugs and negotiated prices
- Medicare.gov — What Medicare drug plans cover
More questions in this guide
- Can I use the Oregon ArrayRx discount card with Medicare?
- How much is insulin with Medicare in Oregon?
- What is the Medicare Prescription Payment Plan?
- Is there still a Medicare Part D donut hole in 2026?
- What is the Medicare Part D out-of-pocket cap for 2027?
Part of the guide: Medicare Part D in Oregon — 2027 drug coverage · All questions
Frequently asked questions
Who qualifies for the GLP-1 Bridge?
You need Medicare drug coverage, must be 18 or older, and must meet a BMI and health test: BMI 35 or higher; 30 or higher with conditions such as uncontrolled high blood pressure or stage 3a kidney disease; or 27 or higher with prediabetes or a prior heart attack or stroke. People with type 2 diabetes, sleep apnea or fatty liver disease use their Part D plan instead.
Does the Bridge copay count toward my Part D out-of-pocket cap?
No. Medicare.gov says the Bridge copay doesn't count toward your deductible or out-of-pocket limit, can't be lowered by Extra Help, and can't be spread out through the Medicare Prescription Payment Plan.
Does Medicare cover other obesity treatment?
Yes. Part B covers obesity screening and behavioral counseling with your primary care provider if your BMI is 30 or more, and bariatric surgery when you meet Medicare's medical criteria.
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