Zepbound (tirzepatide) is FDA-approved for chronic weight management and competes with Wegovy in the anti-obesity medication market. Insurance coverage is expanding but remains inconsistent, with many plans still excluding weight loss drugs. Zepbound costs approximately $1,000 per month without insurance, and coverage depends heavily on your employer's benefit design.
Key Facts
Check Your Specific Plan's Formulary
Coverage varies by plan. Use our formulary checker tool to look up your exact copay and restrictions.
Open Formulary CheckerSources and standards behind this page
Drug coverage in the United States is governed by published rules rather than by any one insurer's summary, and the sources below are the primary ones. They are linked so a reader can check a claim without taking this page's word for it.
- FDA Orange Book publishes the therapeutic-equivalence ratings that decide whether a generic may be substituted for a brand-name drug.
- FDA generic drug facts sets out what "generic equivalent" means and what a manufacturer must prove.
- CMS prescription drug coverage defines the rules a Medicare drug plan formulary must follow and how it may change mid-year.
- Medicare.gov drug coverage (Part D) states what a Part D plan is required to offer a member.
- CMS prescription drug appeals documents the coverage-determination and exception process when a drug is denied.
This page describes how coverage and formularies work. It is not medical advice, and a reader's own plan documents and prescriber decide what applies to them.
Frequently Asked Questions
Zepbound and Mounjaro contain the same active ingredient (tirzepatide) but are approved for different uses. Mounjaro is for type 2 diabetes, while Zepbound is for weight management. Insurance covers them based on your diagnosis. They are separate products with different NDC numbers, so pharmacies cannot substitute one for the other.
First, verify your plan covers anti-obesity medications. If it does, your doctor submits prior authorization documenting your BMI, weight-related conditions, and previous weight management attempts. If your plan excludes weight loss drugs, ask your employer (for group plans) about adding coverage. Consider switching plans during open enrollment.
Medicaid coverage of weight loss drugs varies by state. Some state Medicaid programs have begun covering FDA-approved anti-obesity medications, while others explicitly exclude them. Check your state Medicaid formulary or call your Medicaid plan for specific coverage information.
Related Resources
- UnitedHealthcare Formulary 2026
- Blue Cross Blue Shield Formulary 2026
- Aetna Formulary 2026
- Wegovy cash price comparison on RxGrab
- Mounjaro cash price comparison on RxGrab
- Ozempic cash price comparison on RxGrab
- Saxenda cash price comparison on RxGrab
- Contrave cash price comparison on RxGrab
- Wegovy patient assistance program
- Mounjaro patient assistance program
- Ozempic patient assistance program
- Drug interaction checker tool
- Patient assistance program finder
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