Eligibility Verification: The Cheapest Way to Prevent Claim Denials
The cheapest denial to fix is the one that never happens. Many denials trace back to something that could have been caught before the patient was seen: coverage that ended, a plan that changed, a service that is not covered, or an authorization that was never obtained. Verifying eligibility before every visit catches many of them.
What eligibility verification is
Eligibility verification means confirming, before the visit, that the patient's insurance is active and covers the service you plan to provide. It also tells you what the patient owes, so you can collect it at the visit instead of chasing it later.
What to check every time
Active coverage on the date of service
The right payer and plan, including whether the patient has a new plan
Primary and secondary insurance, and which pays first
Whether the service is covered and whether it needs prior authorization
The patient's costs: copay, deductible remaining and coinsurance
Visit or unit limits for the plan year
Referral requirements for the plan
When to verify
When the appointment is booked.
One to two days before the visit, to catch changes.
Again at the start of a new plan year, when coverage, deductibles and limits reset.
Checking only at the first visit is not enough. Coverage can change mid-year when a patient changes jobs, switches plans or loses Medicaid.
Prior authorization goes hand in hand
If the service needs prior authorization, get it before the visit and track its expiration and limits. Starting in 2026, the CMS Interoperability and Prior Authorization rule requires Medicare Advantage plans, Medicaid and CHIP to decide most prior authorization requests within 72 hours for urgent requests and seven calendar days for standard ones. Those payers, plus ACA plans sold on the federal marketplace, must also give a specific reason when they deny a request (CMS). That helps, but it does not replace a front desk that checks before every visit.
Tools that make it faster
Multi-payer portals like Availity let your team check eligibility and benefits for many payers in one place. Most practice management systems can also run electronic eligibility checks automatically for the day's schedule. The key is making the check a habit, not an afterthought.
What it saves you
Every denial you prevent saves the time to rework it, the delay in getting paid and the risk of never being paid at all. Collecting the patient's share at the visit also cuts down on statements and collection calls later.
How Korps helps
Korps runs eligibility checks for your schedule, sets up Availity for your practice and flags coverage problems before the patient walks in.
Frequently asked questions
How often should I verify insurance eligibility?
Before every visit, ideally when the appointment is booked and again a day or two before.
What is the difference between eligibility and prior authorization?
Eligibility confirms the patient has active coverage for the service. Prior authorization is the payer's advance approval for a specific service.
Can eligibility checks be automated?
Yes. Most practice management systems and portals like Availity can run checks for your whole schedule.
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