Getting a pet insurance claim denied after an expensive vet visit is one of the most frustrating experiences a pet owner can face. You paid your premiums faithfully, your pet needed care, and now your insurer is saying no.
Here's the good news: a denial is not always final. A 2025 MarketWatch study found that 33% of pet insurance policyholders had at least one claim during the year, and many of those who were initially denied were able to successfully appeal. Knowing what to do next can make all the difference.
Key stat: According to the Financial Ombudsman Service, 52% of pet insurance complaints were upheld in favor of the customer in early 2025. That means if you push back, you have a real chance of winning.
Your insurer is required to tell you exactly why your claim was denied. The denial letter should include:
Don't skip this step. The reason for the denial will determine your entire strategy going forward. The most common reasons are listed below.
This is the single most common reason for claim denials. If your pet showed symptoms of a condition before your policy started, or if the condition existed before enrollment, most policies won't cover it. This includes conditions that were never formally diagnosed but appeared in vet records as symptoms.
Most pet insurance policies have a waiting period of 14 days for illnesses and 48 hours for accidents. If your pet was treated during this window, the claim will be automatically denied regardless of the condition.
Preventive care, dental cleaning, grooming, and cosmetic procedures are typically excluded. Some policies also exclude specific conditions like hip dysplasia or hereditary conditions depending on the breed.
A surprisingly common reason. If your claim is missing veterinary invoices, medical records, or a completed claim form, it may be denied on a technicality. This type of denial is usually the easiest to fix.
If you've already reached your annual deductible limit or per-incident limit, additional claims will be denied until the policy renews.
Tip: If your claim was denied for missing documentation, simply resubmit with the complete paperwork. This is not a true denial and can often be resolved within days.
Before filing a formal appeal, call or email your insurer's claims department. Ask them to walk you through the denial reason in detail. Sometimes a simple conversation can resolve the issue, especially if there was a misclassification or missing document.
When you call, take notes. Write down the name of the representative, the date and time, and exactly what they tell you. This information will be useful if you need to escalate.
If you decide to appeal, you'll need strong documentation. Start collecting:
Every pet insurance company has an internal appeals process. Your denial letter should explain how to initiate one. Most internal appeals are reviewed within 30 to 60 days.
A strong appeal letter should:
PawClaim's free AI appeal letter generator creates a professional, persuasive appeal in under 2 minutes. Used by thousands of pet owners.
Generate Appeal Letter →If your internal appeal fails, you have additional options. You can file a complaint with your state's insurance department for independent review. Many states offer free mediation services that investigate claim handling practices. In some cases, this external pressure alone is enough to get the insurer to reconsider.
A denied claim is not the end of the road. With the right approach and documentation, many pet owners successfully overturn denials and receive the reimbursement they deserve.
