Specialty RCM Gastroenterology & Ambulatory Surgery Houston, TX (12 Gastroenterologists)
Gulf Coast GI: Optimizing Colonoscopy & Endoscopy Billing Across 3 ASC Facilities
Resolving screening vs diagnostic colonoscopy coding shifts, Moderate Sedation billing, and ASC facility fee reimbursements.
Published April 2026 6 min read
99.1%
Clean Claim Rate
ASC facility & professional claims
+28%
Screening Conversion Yield
From correct Modifier 33/PT usage
23 Days
Days in A/R
Down from 52 days
The Challenge
- Preventive screening colonoscopies converted to diagnostic procedures when polyps were removed, triggering patient deductible complaints.
- Moderate sedation CPT 99152 billed incorrectly with primary GI procedure codes.
- Ambulatory Surgery Center (ASC) facility fee claims delayed by clearinghouses.
The Solution & Strategy
- Applied Modifier 33 (Preventive Service) and Modifier PT (Medicare screening converted to diagnostic) automatically upon polyp removal.
- Standardized moderate sedation documentation criteria in ASC operative logs.
- Dual-billed professional physician fees and ASC facility claims simultaneously.
Quantifiable Key Results
Screening Yield
+28%
Eliminated patient billing disputesClean Claim Rate
99.1%
Up from 84.0%Days in A/R
23 Days
55% drop in aging claims"When a screening colonoscopy turns diagnostic, coding must be flawless. YAKKAY Healthcare eliminated patient deductible confusion and boosted our ASC revenue."
Dr. Rajiv Patel, MDManaging Partner at Gulf Coast Gastroenterology
Actionable Takeaways for Practice Leaders
1
Append Modifier 33 or Modifier PT immediately when a preventive screening colonoscopy yields a polyp removal2
Ensure moderate sedation start/stop times are recorded in ASC operative logs to support CPT 99152 billingReady to Achieve Similar Results?
Schedule a complimentary Revenue Cycle Audit for your practice to pinpoint billing leaks and clean claim opportunities.
Organization Profile
Organization:Gulf Coast Gastroenterology
Specialty:Gastroenterology & Ambulatory Surgery
Location & Scale:Houston, TX (12 Gastroenterologists)
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