I've spent years working with medical billing for specialty practices, and the same denial patterns keep showing up. Here's what's actually costing clinics the most:

1. Missing or invalid modifiers — Especially on E/M codes with procedures. Most denials here are preventable with a simple modifier checklist before submission.

2. Timely filing misses — This one hurts because there's zero recourse. If your team is batching claims weekly instead of daily, you're playing with fire. Every major payer has different windows.

3. Authorization not on file — Specialty groups get hit hardest here. If your front desk isn't verifying auth before the visit, the claim is dead on arrival.

4. Duplicate claims — Usually a system issue. If your software doesn't flag potential duplicates before submission, you're generating unnecessary denials that tank your clean claim rate.

5. Coordination of benefits errors — Secondary payer claims are a mess when primary EOBs aren't attached or the order is wrong. This is where automation pays for itself.

The practices that fix these five issues typically see a 15-20% jump in first-pass acceptance rates. That's real money — tens of thousands per month for a 20+ provider group.

We built BillMD to catch all five of these before claims ever leave your office. If you're running a mid-size clinic and tired of leaving money on the table, check us out.