Ask the plan about your exact medicine and use.

Start with the covered-drug list

A formulary is an insurance plan’s list showing which medicines it covers.

Prior authorization is a plan’s check before it agrees to cover a medicine.

Give your plan the medicine’s specific name and ask about coverage for your condition. Request the forms, conditions, and expected payment that apply to you.

Coverage can depend on the treatment’s purpose

Part D is Medicare’s prescription medicine benefit.

As of September 2026, Medicare’s ordinary Part D benefit continues to exclude medicines used to lose weight.

The same medicine may be coverable for another accepted medical use, but each plan’s list and approval rules still apply.

Tell your plan why your treating professional is considering this medicine and ask whether it will pay for that use.

A temporary Medicare program has its own rules

GLP-1 is a hormone with roles in blood sugar and appetite. Medicines that copy its effects use the same name.

A copay is your share of a cost. A deductible is the amount you pay yourself before the benefit begins paying.

The Medicare GLP-1 Bridge gives eligible adults access to selected weight-loss medicines with a copay of $50 per month, as of September 2026.

This program sits apart from ordinary Part D. The Bridge begins July 1, 2026; the program ends December 31, 2027.

For people with type 2 diabetes, the usual coverage process applies instead; further health and plan rules also determine eligibility.

Paying $50 through the Bridge does not help meet your Part D deductible. That payment also adds nothing toward Part D’s annual out-of-pocket limit, which caps your spending on covered medicines during the year.

Ask your plan to show both amounts: what the Bridge would cost you over the year, and what you could owe for medicines under Part D. Check the official program details with the plan and prescriber.