Federal fact file dated September 26, 2026.
The reason for the prescription affects coverage
Ask the plan about the exact drug and its intended use. Then ask what you would have to pay.
Ordinary Medicare drug coverage has a use-based limit
Medicare Part D is its drug benefit. The rule excludes drugs used for weight loss from this benefit.
Read the federal definition of the Part D benefit
The same drug can be coverable for another medically accepted use, subject to the plan’s drug list and prior approval.
Read the Medicare explanation of other accepted uses
Coverable means a plan can consider it for payment, not that payment is certain.
Ask the plan which use it is reviewing.
A time-limited programme sits outside Part D
For eligible people, the temporary Medicare GLP-1 Bridge offers certain drugs at a $50 monthly copay.
Read Medicare’s temporary Bridge overview
The Bridge began July 1, 2026, with its end set at December 31, 2027.
It operates outside the ordinary Part D benefit, rather than removing the weight-loss exclusion.
Bridge eligibility depends on age, weight, health history and the kind of drug plan you have. If your Part D plan paid for medicine of this kind in 2026, the Bridge is closed to you for 2026. This concerns GLP-1 drug payment, rather than just enrolling in Part D.
Check the Bridge eligibility details with the prescriber
Before it agrees to pay, the programme reviews the request. That review is called prior authorization.
To enter the Bridge, you need both a prescription and approval through that review.
Ask about the conditions behind the copay
The Bridge copay does not count toward Part D’s yearly limit on what you pay out of your own pocket. Coupons cannot be used with the Bridge.
Read the Bridge payment conditions
You cannot join the Bridge if you have type 2 diabetes. This applies even when you also have a weight problem. Ask your usual Part D plan to review payment for the medicine’s use in treating diabetes. Payment still depends on the plan’s rules.
For workplace or other coverage, ask the plan to check the exact proposal. Request its answer in writing, including any conditions and review process.