Top Claim Denials in 2025 (and How to Fix Them)
Denials are not just “no payment” — they are delayed cash, extra work, and lost revenue if not handled fast. Below are the most common denial categories billers are seeing in 2025 and the best next action to take.
1) Missing / Invalid Authorization (PA)
What it means: Prior authorization was required but not present, expired, or mismatched.
- Fix: Verify payer PA rules and confirm auth number matches CPT, dates, rendering provider.
- Prevent: Capture PA at scheduling + validate at eligibility check.
2) Eligibility / Coverage Not Active
What it means: Patient coverage inactive, wrong member ID, wrong payer, or plan mismatch.
- Fix: Re-check eligibility (DOS specific), correct subscriber/member ID, update payer plan.
- Prevent: Run eligibility at least twice: scheduling + day-of-service.
3) Timely Filing
What it means: Claim submitted after payer deadline.
- Fix: Appeal with proof of timely submission (clearinghouse report, trace, acceptance).
- Prevent: Use a daily “unsubmitted claims” dashboard.
4) Coding / Modifier Issues
What it means: CPT/ICD mismatch, invalid modifier, bundling/unbundling errors.
- Fix: Compare EOB remark with claim coding. Add correct modifier, correct DX pointer, refile.
- Prevent: Use coding edits + payer-specific rules for modifiers.
5) Duplicate Claim / Duplicate Service
What it means: Payer believes the same claim or service was already processed.
- Fix: Confirm original claim status. If corrected claim, use proper frequency code.
- Prevent: Avoid re-submitting without checking payer portal / clearinghouse status.
6) Coordination of Benefits (COB)
What it means: Primary payer expected but claim sent as primary; or other insurance info missing.
- Fix: Update COB, obtain primary EOB, resubmit as secondary with correct payer order.
- Prevent: Verify insurance order at registration and yearly updates.
7) Medical Necessity
What it means: Payer does not consider service necessary for diagnosis or setting.
- Fix: Submit documentation, add more specific diagnosis, appeal with LCD/NCD guideline.
- Prevent: Ensure diagnosis supports CPT and place-of-service rules.
8) Missing Information
What it means: Required info missing: NPI, taxonomy, rendering, referring provider, etc.
- Fix: Correct claim demographics/provider data and resubmit.
- Prevent: Use validation rules at claim creation.
How MedClaimsIQ Helps With Denials
- Extracts common adjustment codes from 835
- Groups denials by category
- Creates a work queue for follow-up
- Helps track aging and claim balances