Colonoscopy Insurance Denial Appeal Guide

The Screening vs Diagnostic Problem

Under the ACA, screening colonoscopies must be covered with no cost-sharing. However, if polyps are found and removed during a screening, insurers often reclassify it as a diagnostic procedure and apply deductibles and copays.

Common Billing Issues

• Screening reclassified as diagnostic when polyps removed
• Age not meeting screening guidelines (under 45)
• Procedure coded incorrectly by provider
• Prior authorization required for diagnostic colonoscopy
• Facility vs professional fee disputes

How to Appeal

1. Check the ACA mandate — the No Surprises Act and ACA require screening colonoscopy coverage even when polyps are found
2. Review CPT codes — ensure the procedure was coded correctly (screening vs diagnostic)
3. Federal guidance — CMS has clarified that polyp removal during screening does not change coverage
4. File with your state insurance commissioner if plan ignores ACA requirements
5. Request re-coding if the provider used incorrect procedure codes

ACA Protections

As of 2022, federal guidance clarifies that insurers cannot reclassify screening colonoscopies as diagnostic simply because polyps were found and removed. This is your strongest argument in appeals.