Cost chapter
Medicare has different routes
Ordinary drug coverage and the temporary weight-medicine program have different rules.
The ordinary drug benefit
Medicare Part D is its prescription-drug benefit. The patient’s share of a bill covered by insurance is called a copay.
As of September 2026, the regular Part D benefit still excludes medicines when used for weight loss or weight management.
A medicine may be covered for another accepted medical use, such as diabetes or certain heart conditions, subject to the plan’s rules.
Regular Part D versus the Bridge
Regular Part D
Coverage for a use other than weight loss depends on the plan’s medicine list and prior approval rules.
Ask the plan how the prescription’s medical reason affects payment.
Temporary Bridge
GLP-1 occurs naturally in the body and helps control blood sugar and hunger. GLP-1 medicines act like that substance.
Eligible Part D members can obtain certain weight medicines through the Medicare GLP-1 Bridge with a monthly copay of $50.
The September 2026 check puts the Bridge’s opening date at July 1, 2026, and its closing date at December 31, 2027. A separate service handles its approval and pharmacy payment, rather than the usual Part D plan.
Ask the pharmacist how the prescription will be billed through the Bridge.
Check age, weight, and health with the prescriber
The Bridge requires age 18 or older. Its weight-and-health checks use BMI at the start of GLP-1 treatment; this number is calculated from a person’s height and weight.
The weight-and-health test can be met with a BMI of at least 35.
A BMI of at least 30 can meet it if there is heart failure with preserved pumping strength, blood pressure that is high and uncontrolled, or kidney disease in stage 3a or a later stage.
The blood-pressure rule requires a reading above 140 for the top number or above 90 for the bottom number, despite two blood-pressure medicines. These readings use mm Hg, or millimeters of mercury, a pressure unit.
A BMI of at least 27 can meet it with any of these: pre-diabetes; a heart attack in the past; a stroke in the past; or symptoms from peripheral artery disease.
With pre-diabetes, blood sugar is higher than normal, yet has not reached the range for diabetes. Peripheral artery disease affects the blood vessels that carry blood to the legs or arms.
A kidney-disease stage is the level of disease listed in your medical records.
Ask the prescriber to check your recorded height, weight, and exact diagnoses against these rules.
The plan and prescription must qualify too
A separate drug plan under Part D can qualify, as can a coordinated care plan under Medicare Advantage that includes drug coverage. Some other plan types are excluded.
Ask your plan to confirm its exact type and whether it qualifies.
A prescription and prior authorization are required. Prior authorization is approval before the program pays for the medicine.
The prescription must include ongoing changes to eating and physical activity, with a structured plan for both.
For a patient with type 2 diabetes, the route is ordinary Part D; the Bridge is excluded.
The Bridge also excludes people whose obstructive sleep apnea is moderate or severe. This is a condition in which breathing is blocked during sleep.
MASH is a specific fatty liver disease. It rules out the Bridge when there is moderate or advanced liver scarring without cirrhosis. Cirrhosis is a later, severe form of liver scarring.
Not every diagnosis of fatty liver makes a person ineligible under this rule. Ask which diagnosis is in your record.
Ordinary Part D handles a prescription meant to reduce major heart and blood-vessel event risk; such a prescription is excluded from the Bridge.
A person who already received a GLP-1 drug through Part D during 2026 cannot use the Bridge in that year.
Before paying, go through the complete rules with the person who will write your prescription.
The product and the copay both matter
As of September 2026, the Bridge includes orforglipron, sold as Foundayo tablets. It also includes semaglutide, sold as Wegovy tablets or injections.
For tirzepatide, sold as Zepbound, it includes only the injection device named KwikPen. A KwikPen is a particular type of injection pen.
Zepbound pens holding a single dose are not included. Neither are single-dose vials, which are small medicine bottles.
The device matters even when the medicine name is the same. Ask the pharmacist to check the exact version.
The $50 paid each month through the Bridge is excluded from the annual cap on your spending for covered Part D medicines. Low-income help called a subsidy does not reduce this Bridge payment.
Coupons cannot reduce the Bridge payment. The pharmacy can supply only one month of medicine at a time through this program.