Gastroenterology Medical Billing Services

Expert billing for GI practices — from colonoscopy and endoscopy coding to denial management and credentialing. Serving practices nationwide across the United States.

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98%
Clean Claims Rate
GI
Billing Specialists
<30
Avg. AR Days
100%
HIPAA Compliant

What We Handle

Comprehensive billing coverage for your specialty

Colonoscopy & Endoscopy Coding

Accurate CPT coding for diagnostic and therapeutic colonoscopies, upper endoscopies, ERCP, and EUS with proper modifier application.

GI Procedure Billing

Complete billing for liver biopsies, capsule endoscopy, hemorrhoid procedures, polyp removal, and all GI interventional procedures.

Denial Management

GI claims are frequently denied for bundling and medical necessity. We proactively appeal and recover all denied claims.

Credentialing

Provider enrollment with Medicare, Medicaid, and all commercial payers for gastroenterologists and GI groups.

Prior Authorization

Managing prior auth requirements for advanced GI procedures to prevent denials before they happen.

Revenue Analytics

Monthly reports on your GI practice financial performance with actionable insights.

Common Codes We Handle

45378 – Colonoscopy45380 – Colonoscopy w/ Biopsy45385 – Polypectomy43239 – EGD w/ Biopsy43235 – Upper Endoscopy91110 – Capsule Endoscopy43264 – ERCP45330 – Sigmoidoscopy47562 – Cholecystectomy20610 – Joint Injection

What's Included

  • ICD-10 & CPT coding for all GI procedures
  • Modifier 59, 25, 51 application
  • Medicare & commercial payer billing
  • Prior authorization management
  • Bundling rule compliance
  • Denial appeals & resubmission
  • ASC & hospital outpatient billing
  • Monthly performance reports

Why Choose Us

  • 98% clean claims rate
  • Specialty-trained billing team
  • No long-term contracts
  • Free 1-week trial
  • Dedicated account manager
  • Works with your existing EHR
  • Full credentialing support
  • Monthly performance reports

A Deeper Look at Gastroenterology Billing

Gastroenterology is one of the most denial-prone specialties in medicine. GI practices live on procedures — colonoscopies, EGDs, ERCPs, capsule studies — and every one of them sits at the intersection of screening-versus-diagnostic rules, payer-specific bundling edits, and strict medical-necessity requirements. A billing team that treats GI claims like generic office visits will leak revenue every single week. Here is how we approach the parts of GI billing where practices lose the most money.

Screening vs. Diagnostic Colonoscopy: Where Most Revenue Leaks

The single most common GI billing error is mishandling a screening colonoscopy that converts to diagnostic when a polyp is found. Commercial payers generally require modifier 33 and Medicare requires modifier PT to preserve the patient's zero-cost-share screening benefit. Get it wrong and the patient receives a surprise bill, your front desk fields angry calls, and the claim often ends up reprocessed or written off. We apply conversion modifiers correctly on every claim and verify each payer's screening policy before submission.

NCCI Edits and Bundling in GI

Same-session procedures — an EGD and colonoscopy performed together, or multiple techniques used on the same lesion — trigger National Correct Coding Initiative edits constantly. Multiple endoscopy payment rules reduce reimbursement on secondary procedures, and careless use of modifier 59 or XU to force claims through is one of the fastest ways to attract a payer audit. Our coders apply bundling logic the way payers expect it, so claims are paid correctly the first time and stand up to review.

Anesthesia, Facility, and Pathology Coordination

A single colonoscopy can generate three or four separate claims: the professional fee, the ASC or hospital facility fee, anesthesia, and pathology. When those claims don't line up — mismatched diagnosis codes, different service dates, missing anesthesia documentation — payers deny some or all of them. We reconcile every component of the encounter so the whole episode is billed consistently and nothing falls through the cracks.

Documentation That Supports Medical Necessity

Payers enforce strict frequency limits on surveillance colonoscopy for conditions like Barrett's esophagus, IBD, and personal history of polyps. If the documented interval or indication doesn't match the payer's policy, the claim denies for medical necessity. We flag interval and indication problems before submission and give your providers concise documentation feedback instead of letting the same denial repeat every month.

What Switching to Us Looks Like

Onboarding a GI practice typically takes five to ten business days. We connect to your existing EHR and practice-management system, run in parallel with your current process during transition, and take over the full cycle — eligibility, prior authorization, coding, submission, posting, denials, and patient statements — with zero downtime for your schedule. There are no long-term contracts, and you can start with a free one-week billing audit of your recent claims.

Frequently Asked Questions

How do you bill a screening colonoscopy that becomes diagnostic?
We append modifier 33 for commercial payers or modifier PT for Medicare so the encounter is still processed under the patient's preventive benefit. This keeps the patient's cost share intact and prevents the reprocessing cycle that delays payment.
How do you charge for GI billing services?
We work on a simple percentage of monthly collections with no setup fees and no long-term contract. Most GI practices find the service pays for itself through recovered denials and cleaner first-pass claims. Contact us for a quote based on your volume.
How long does onboarding take for a GI practice?
Typically five to ten business days. We need EHR and clearinghouse access, your payer list, and fee schedules. We run alongside your existing process during the switch so no claims are delayed.
Can you recover old GI claims that were already denied?
Yes. As part of onboarding we review your outstanding accounts receivable, identify denied and underpaid claims that are still within timely-filing and appeal windows, and work them alongside your new claims.
Why are GI claims denied so frequently?
GI claims are denied most often due to bundling conflicts, missing prior authorizations, incorrect modifiers, and medical necessity issues. Our GI-trained team prevents these denials.
Do you handle ASC billing?
Yes. We handle both professional fee billing and ASC facility billing for GI procedures performed in outpatient surgery centers.
Can you work with our existing EHR?
Yes. We integrate with all major GI EHR systems including gGastro, Modernizing Medicine, Epic, and Athenahealth.

Patients asking what it costs? Our colonoscopy cost guide covers cash pricing and the screening-versus-diagnostic coding question.

Related Billing Specialties

Specialties tied to GI by endoscopy sedation, screening rules and cancer pathways.

Anesthesiology Billing

Endoscopy sedation generates a paired claim on nearly every procedure, with its own coverage rules.

Oncology & Hematology Billing

Colorectal and hepatic cancer pathways run between the two, from screening through surveillance.

Radiology Billing

Imaging supports most GI workups, and professional/technical splits have to be billed cleanly.

Private Practice Billing

Independent GI practices carry the same overhead and outsourcing questions as any small practice.

We bill all of these in house. If your group spans several of them, multi-specialty billing keeps one team across every line — or see the full list of services.

Ready to Optimize Your GI Practice Revenue?

Get a free billing audit and see how much more your gastroenterology practice can collect.

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Free resources: Denial Code Lookup  |  RVU Calculator  |  AR Days Calculator  |  CO-236 — EGD/colonoscopy same-day edits