Gastroenterology billing covers a wide mix of office visits, endoscopic procedures, and diagnostic testing. The single biggest source of denials and patient billing complaints, however, almost always comes back to one distinction.
Screening vs. Diagnostic Colonoscopy Coding
Whether a colonoscopy is billed as screening or diagnostic depends on the patient's history and what's found during the procedure — and getting this wrong doesn't just risk a denial, it can also result in an unexpected patient bill for a procedure that should have been covered as preventive care.
Modifier Use on Same-Day Procedures
When an office visit and a procedure happen on the same day, modifier accuracy determines whether both are reimbursed or one gets bundled away.
Prior Authorization Delays
Certain GI procedures require prior authorization, and delays here directly affect scheduling — pushing revenue further out even when the eventual claim is clean.
The Fix
GI-specific coding expertise and dedicated prior-authorization follow-up are the two changes that most directly reduce denials and scheduling delays in a gastroenterology practice.