To qualify for Zepbound, you need a BMI of 30 or higher, or a BMI of 27 or higher with at least one weight-related health condition. That’s the FDA-approved standard, and it’s the baseline your provider and insurance company will start from. But meeting the medical criteria is only one part of the process. Getting a prescription filled and paid for involves navigating provider requirements, insurance rules, and sometimes a history of trying other treatments first.
The BMI Thresholds
Zepbound is approved for adults 18 and older as part of a weight management plan that includes a reduced-calorie diet and increased physical activity. The two qualifying paths are straightforward:
- BMI of 30 or greater (classified as obesity), with no additional conditions required.
- BMI of 27 or greater (classified as overweight), if you also have at least one weight-related comorbidity.
The qualifying comorbidities listed on the label include high blood pressure, high cholesterol, type 2 diabetes, obstructive sleep apnea, and cardiovascular disease. Your provider documents your height and weight to calculate your BMI, and insurance companies typically require those measurements to have been taken within the last 90 days.
Who Cannot Take Zepbound
Certain medical histories will disqualify you. Zepbound carries a boxed warning about thyroid tumors, and it’s contraindicated if you have a personal or family history of medullary thyroid carcinoma (a specific type of thyroid cancer) or a condition called Multiple Endocrine Neoplasia syndrome type 2. You also cannot use it if you’ve had a serious allergic reaction to tirzepatide, the active ingredient.
Your provider will screen for these and other potential issues before prescribing. You also can’t use Zepbound at the same time as other medications containing tirzepatide (such as Mounjaro, its diabetes counterpart) or other GLP-1 receptor agonists like Wegovy or Saxenda.
Getting a Prescription
You don’t necessarily need a specialist. Primary care doctors can prescribe Zepbound, and so can providers through telehealth platforms, some of which connect you with board-certified obesity medicine specialists and registered dietitians. Eli Lilly, the company that makes Zepbound, lists several telehealth partners on its website that offer personalized plans including medication prescriptions when appropriate.
That said, some insurance plans require the prescription to come from, or at least involve a consultation with, a specific type of specialist. For example, if you’re qualifying through obstructive sleep apnea, one major insurer requires that the prescribing provider be a sleep specialist, pulmonologist, or someone experienced in treating that condition.
What Insurance Companies Require
Meeting the FDA criteria doesn’t guarantee your insurance will cover the cost. Most plans require prior authorization, which means your provider submits documentation proving you qualify before the pharmacy will fill it at the covered price. The documentation typically includes your recent height and weight, your BMI calculation, and any relevant diagnoses.
Prior authorization forms ask detailed questions. A representative example from Johns Hopkins Health Plans shows the level of specificity: providers must submit chart notes supporting the BMI claim, confirm the patient has no contraindications, and verify no concurrent use of similar medications. For sleep apnea qualification specifically, the insurer required a formal sleep study showing 15 or more breathing interruptions per hour, conducted within the last 18 months.
For reauthorization after the first year, insurers want to see documented clinical benefit. That means your provider needs to show the medication is actually working for you, whether that’s measured by weight loss, improvement in comorbidities, or both.
Step Therapy: Trying Other Medications First
Many insurance plans won’t approve Zepbound as a first-line treatment. They require “step therapy,” meaning you need to try and fail on cheaper alternatives before they’ll cover a more expensive option. UnitedHealthcare, for instance, requires new users to first try phentermine (with or without topiramate), an older and much less expensive weight loss medication. Notably, UnitedHealthcare does not require you to have tried Wegovy or Saxenda first.
Step therapy requirements vary widely between insurers and even between plans within the same company. Some employer-sponsored plans have no step therapy requirement at all, while others have a longer list. Your provider’s office can usually check your specific plan’s requirements during the prior authorization process.
Paying Without Full Insurance Coverage
Zepbound’s list price makes out-of-pocket payment difficult for most people, so manufacturer savings programs matter. Eli Lilly offers a savings card, but eligibility has clear limits. You cannot use the savings card if you’re on any government-funded insurance, including Medicare, Medicaid, Tricare, or Veterans Affairs programs. If your insurance plan participates in an alternate funding program that requires use of the manufacturer’s savings card as a condition for coverage, you’re also ineligible.
There are state-specific restrictions too. Massachusetts residents can’t use the card if an AB-rated generic equivalent becomes available, and California residents lose eligibility if an FDA-approved therapeutic equivalent exists.
If your commercial insurance denies coverage entirely, the savings card may still help reduce costs, but the specifics change frequently. Checking the Zepbound savings page directly gives you the most current pricing structure.
Practical Steps to Get Started
The qualification process, from first appointment to filled prescription, typically involves a few key steps. Schedule a visit (in person or telehealth) where your provider records your current height and weight, reviews your medical history for qualifying comorbidities and contraindications, and discusses whether Zepbound is appropriate for you. If they write a prescription, the prior authorization process usually takes a few days to a couple of weeks depending on your insurer’s turnaround time.
If your prior authorization is denied, your provider can file an appeal. Common reasons for denial include missing documentation, not meeting step therapy requirements, or BMI measurements that are older than the insurer’s accepted window. Knowing these requirements upfront, particularly whether your plan has step therapy rules, can save you weeks of back and forth.