Denied coverage? Seven steps to appeal a GLP-1 decision
An insurance denial does not always mean the case is closed. Patients seeking coverage for Wegovy, Zepbound or another GLP-1 medication may have several opportunities to challenge the decision.
Here's what you can do if your prescription is denied.
1. Get the denial in writing
Ask the insurer for the complete denial notice, including the specific reason coverage was refused.
Common reasons include:
- The medication is excluded from the plan.
- The patient does not meet the required BMI threshold.
- Medical records were incomplete.
- Prior authorization was not submitted correctly.
- The insurer requires another treatment to be tried first.
- The drug was prescribed for a use the plan does not cover.
A formal exclusion is harder to overturn than a denial based on missing paperwork or insufficient documentation.
2. Request the plan’s coverage rules
Ask for the insurer’s written clinical criteria and drug formulary—not just a customer-service explanation.
The rules may require documentation of obesity-related conditions such as:
- High blood pressure
- Type 2 diabetes or prediabetes
- Cardiovascular disease
- Sleep apnea
- High cholesterol
- Fatty liver disease
- Mobility limitations or joint problems
Knowing the exact criteria allows the doctor to address each requirement directly.

3. Ask the doctor to strengthen the record
The prescribing clinician should document why the medication is medically necessary and why less expensive alternatives may be inappropriate or ineffective.
The appeal should include relevant diagnoses, weight history, previous treatment attempts, laboratory results, medication history and any complications linked to obesity.
A brief prescription may not be enough. A detailed medical-necessity letter can make a substantial difference.
4. Check for paperwork errors
Many prior-authorization denials involve incomplete forms, missing test results or incorrect diagnostic codes.
Ask the doctor’s office whether the insurer requested additional information and whether every question was answered. The office may be able to correct and resubmit the request without filing a full appeal.
5. Use every level of appeal
Most plans provide at least one internal appeal. Some allow a second review or an external review by an independent medical expert.
Follow the deadlines listed in the denial letter. Keep copies of every form, letter, medical record and telephone note.
When calling the insurer, record:
- The date and time
- The representative’s name
- The reference number
- What was promised
- The next deadline
Patients facing an urgent medical need can ask whether an expedited appeal is available.
6. Ask about employer or benefits-office help
Workers covered through an employer should contact the company’s benefits department.
Employers often decide whether weight-loss drugs are included in the plan. In some cases, the insurer merely administers rules selected by the employer.
The benefits office may be able to explain exclusions, correct enrollment problems or identify another covered treatment. Employees may also ask the employer to reconsider the exclusion during the next plan year.
7. Compare legitimate alternatives carefully
Patients paying out of pocket should ask the prescriber about manufacturer programs, authorized direct-purchase channels and other FDA-approved medications.
Be cautious with websites offering unusually cheap compounded, “generic” or “research” versions of semaglutide or tirzepatide.
Red flags include:
- No prescription required
- No medical consultation
- Payment by cryptocurrency or wire transfer
- Products labeled “for research use only”
- No identifiable licensed pharmacy
- Claims that the product is identical to an approved drug
- Vials with unclear dosage or labeling
Consumers should verify the pharmacy with their state board of pharmacy and discuss any product with a licensed clinician before using it.
The bottom line
The strongest appeal is specific, documented and tied directly to the insurer’s own rules.
Patients should not simply ask the company to reconsider. They should show, point by point, why the treatment meets the plan’s stated coverage criteria—and pursue every available level of review.
