In this article
Why Denials Keep Happening
Most denied claims don't happen because of complex payer disputes or unusual service types. The majority trace back to a small set of preventable errors that occur early in the billing process — before a claim is ever submitted.
If your denial rate is above 5%, you're losing money on claims that should have been paid on the first submission. Here are the five most common causes and what to do about each one.
Reason 1: Missing or Incorrect Patient Information
A misspelled name, wrong date of birth, or incorrect member ID will trigger an automatic denial from most payers. These errors seem trivial, but they're common — especially in high-volume practices where demographic information is entered quickly at check-in.
The fix: Verify patient demographics at every visit, not just at registration. A quick confirmation of insurance ID and name spelling takes 30 seconds and prevents a 60-day follow-up cycle.
Reason 2: Eligibility Failures
Billing a patient whose coverage has lapsed, who has a different primary payer, or whose plan doesn't cover the service provided is a straightforward path to denial. Real-time eligibility verification the day before each appointment catches most of these issues before treatment happens.
Reason 3: Coding Errors
Incorrect CPT or ICD-10 codes, missing modifiers, unbundling issues, and upcoding are all denial triggers. Specialty-specific coding errors are particularly common when a general billing service handles claims across multiple disciplines.
Reason 4: Missing Prior Authorization
Many services require prior authorization from the payer before they are rendered. Billing without one — or billing after an authorization has expired — results in denial. The authorization tracking process needs to be built into your scheduling workflow, not treated as an afterthought.
Reason 5: Timely Filing Failures
Most payers have strict timely filing deadlines — typically 90 to 365 days from the date of service. Claims submitted after the deadline are denied without exception, and these denials are rarely overturnable on appeal.
The Fix: Proactive Scrubbing
The most effective way to reduce denials is to catch errors before a claim leaves your system. A proactive claim scrubbing process reviews every claim for the five issues above before submission — flagging problems for correction rather than sending claims into the payer's denial queue.
At TBL MedRCM, this is built into our standard workflow. Our rejection rate stays under 2% because we find the errors before the payer does.
