Top 5 Mistakes to Avoid When Filing a Health Insurance Claim

Sarah Delorme
Market Insights
April 29, 2025
12 min read

Filing a health insurance claim should be a routine process—submit the paperwork, wait a few days, and receive the reimbursement. In reality, many people unknowingly make small missteps that delay or even jeopardize their claims. Whether you're working with a health spending account (HSA), a wellness spending account (WSA), or a traditional group insurance plan, understanding how to avoid these common pitfalls can save time, money, and frustration.

Here are five of the most frequent mistakes people make when filing a health insurance claim—and how to sidestep them.

1. Not Understanding What Your Plan Covers

More Than Just the Basics

A surprising number of people assume that all health-related expenses are reimbursable. But every plan has its limitations—especially if you're using an HSA or WSA. For instance, a health spending account in Canada might not cover cosmetic procedures or over-the-counter medications unless prescribed.

Similarly, a wellness spending account is intended for lifestyle expenses like fitness programs or mental wellness apps, not medical services. Confusing one for the other—or assuming they work like traditional employee benefits—can easily lead to rejected claims.

Before you spend out-of-pocket, review your plan documentation carefully. This is especially important when comparing group insurance vs HSA, as many employers provide both, but for different categories of expenses.

2. Missing Submission Deadlines

Timing is Everything

Each benefits provider has its own claim submission window. Some allow 90 days post-treatment; others offer a grace period that ends shortly after the benefit year concludes.

Missing this window—even by a day—often results in an automatic rejection, regardless of how valid the claim may be.

If you’re enrolled in an HSA or wellness spending account in Canada, check if your plan includes a carry-forward provision. This may give you an extended timeline to submit unused funds, but not necessarily to file receipts. Knowing the difference could mean the difference between reimbursement and a total loss.

3. Submitting Incomplete or Incorrect Information

Small Errors, Big Delays

Incorrect patient names, missing signatures, and incomplete forms are among the top reasons claims get held up. It might seem minor, but insurance companies have automated systems that flag these discrepancies.

If you’re submitting multiple documents—such as prescriptions, receipts, and treatment plans—ensure they all match in terms of date, spelling, and service provider name. This holds true whether you’re using a group plan or a flexible benefits setup like an HSA.

Double-check everything before submitting, especially if you're dealing with third-party providers who may not always generate standardized receipts.

4. Not Keeping Digital or Physical Copies

Your Claim Isn’t Complete Until It’s Backed Up

Many people discard their receipts or forget to save digital records, especially if they submit claims through an app. This becomes a problem when insurers request follow-up documentation or randomly audit claims for compliance.

It's best practice to keep organized folders (digital and physical) for each plan year. Include receipts, explanations of benefits (EOBs), and correspondence. Whether you’re managing an HSA, a WSA, or traditional employee benefits, keeping records is essential for hassle-free reimbursement and potential appeals.

5. Assuming Denials Are Final

Push Back—But With Documentation

A claim denial isn’t always the end of the road. In many cases, claims are denied due to clerical errors or insufficient documentation. Policyholders often give up at this point, assuming there's no recourse.

Most plans allow an appeal process—especially in group insurance vs HSA setups, where coverage details can overlap. If you believe your expense was legitimate, contact your HR department or plan administrator. Provide a clear explanation and any supporting documents.

Remember, insurance systems are complex. Sometimes, the system just needs a nudge—backed by facts.

One More Step Towards Smarter Claims

Understanding your benefits program—and how to properly navigate it—can drastically improve your experience with health insurance. From knowing how an HSA works to distinguishing between health spending accounts and wellness spending accounts, these small insights can prevent delays and ensure you get the support you're entitled to.

What seems like a minor mistake at the start can become a costly oversight later. With a little diligence and the right information, you can make the most of your plan—without the usual frustration.

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