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Gastroenterology Billing Services
Credex Healthcare built its gastroenterology billing services around the exact failure points, for gastroenterologists, hepatologists, endoscopy centers, and multi-provider GI groups who are tired of chasing the same errors every month.
That’s the whole premise behind Credex Healthcare’s gastroenterology revenue cycle management: catch the detail before the claim goes out, not after the denial comes back.
Your Trusted Partner What Sets Us Apart
95%
First-pass claim approval rate
< 30 days
Average GI billing turnaround
50+ Payers
Payers across Medicare, Medicaid, and commercial networks
Zero-gap
Colonoscopy conversion and prior authorization tracking
A Gastroenterology Billing Service Built Around the Procedure Report
Every case runs through the same check before charge entry: the procedure code should match the endoscopist actually documented and the add-on codes for biopsy and polypectomy attached to the right base code. Our expert check if a screening colonoscopy turned therapeutic mid-procedure, is the correct modifier applied and also confirm the prior authorization on file match with what was actually performed.
A polypectomy billed without its add-on code costs money on that claim and on every similar claim after it, because the error usually isn’t a one-off. It’s a pattern in the charge capture workflow. Same with a screening colonoscopy that should have converted to therapeutic. Left uncorrected, that pattern compounds month over month.
Our gastroenterology billing services in the USA cover:
GI Claims Submission
Claims go out with verified CPT codes, correct add-on relationships, screening-to-therapeutic modifiers applied where they belong, and prior authorization already confirmed for scheduled procedures. We track every claim through adjudication and follow up well before timely filing windows close.
Insurance Payer Enrollment
Provider enrollment for gastroenterologists, hepatologists, and APPs with Medicare, Medicaid, and commercial carriers, plus ASC and endoscopy center facility enrollment for groups that own or run their own procedure suite.
Denial Management
For GI Claims Denials get reviewed again within 48 hours. Colonoscopy bundling disagreements, a missing biopsy add-on, a prior authorization mismatch, a botched screening-to-therapeutic conversion. Whatever the cause, our team fixes it and resubmits with the documentation to back it up.
GI Coding & Documentation Review
Certified coders check every procedure report against the GI CPT set, including 43235, 43239, 45378, and 45385. Base and add-on code relationships get verified, modifiers follow payer rules, and every submitted code has documentation behind it.
Prior Authorization
For Endoscopy Procedures Most commercial payers require approval before an upper or lower endoscopy, screening included. We start and track those authorizations before the procedure is even scheduled, so nothing moves forward without the payer's sign-off on the specific procedure and its indication.
Gastroenterology Revenue Cycle Management
Eligibility verification. Endoscopy and office charge capture review. Payment posting. Facility and professional claim reconciliation. Monthly reporting. End-to-end RCM that gives practice managers real collection data by procedure type and provider, every cycle.
Nationwide Gastroenterology Billing Services Coverage
Medicare’s colonoscopy screening rules don’t stay still, and neither do commercial payer policies on endoscopy prior authorization. Credex Healthcare tracks both, along with current documentation standards for the full GI endoscopy code set, capsule endoscopy, ERCP, and endoscopic ultrasound included. The line between screening and diagnostic coverage matters here. So does what happen to cost-sharing when a screening colonoscopy turns therapeutic mid-case. Get that conversion wrong and a practice loses revenue while the patient gets an incorrect bill, at the same time.
Medicare GI Billing
Medicare covers a screening colonoscopy every 10 years for average-risk beneficiaries with no cost-sharing, but that changes the moment a polyp comes out. Diagnostic colonoscopy runs on different frequency rules entirely. We manage Medicare GI billing with correct code selection, accurate cost-sharing application, and therapeutic conversion modifiers applied on every case where they belong.
Medicaid GI Billing
Medicaid GI coverage and prior authorization rules shift from state to state, and some programs require PA on both screening and diagnostic endoscopy. We maintain state-specific Medicaid billing rules and PA workflows for every state your practice operates in.
ASC & Endoscopy Center Billing
Billing Own or operate a procedure suite, and facility and professional claims have to be billed separately, each with its own CPT codes, revenue codes, and fee schedule. We run both tracks as one coordinated workflow so nothing gets submitted out of sync.
Hepatology & Advanced GI Billing
Liver disease management, hepatitis treatment, liver biopsy. Hepatology carries its own code set, its own prior authorization requirements, its own documentation standards. Our GI billing specialists handle it alongside standard endoscopy billing, as part of one integrated workflow.
Our Gastroenterology Billing Achievements
GI Claims Processed Monthly
Average Billing Turnaround
Payer Enrollment Success Rate
Faster Denial Resolution vs. In-House Billing
End-to-end Gastroenterology Insurance Billing Services
Correct Documentation & Authorization GI claims fail for specific, traceable reasons. A colonoscopy code missing its polypectomy add-on. A screening procedure billed at the diagnostic rate. A prior authorization that doesn’t match the procedure performed. A procedure report too thin to support a therapeutic code. Credex Healthcare catches all of it before a claim gets filed.
Provider NPI & Credential Verification
Every gastroenterologist, hepatologist, and APP gets verified for active payer enrollment, correct specialty taxonomy, and current credentialing status before a single claim goes out under their number. Facility enrollment for any endoscopy center gets checked on its own.
CPT Code & Add-On Code Review
We audit procedure reports against the full GI CPT set, 43235, 43239, 45378, 45385, confirming add-on codes attach to the correct base code and no standalone add-on ships without its required primary procedure.
Screening-to-Therapeutic Conversion
When a screening colonoscopy leads to polyp removal, the claim has to shift from the screening code to the therapeutic code with the PT modifier. That preserves the patient's cost-sharing benefit and gets the claim billed at the correct rate. We apply it on every applicable case, not only when a coder happens to flag it.
Prior Authorization Tracking
Tracked per patient, per payer, matched to the specific procedure code and indication authorized. When a diagnostic colonoscopy converts to therapeutic mid-case, we check whether the existing authorization still covers it, or whether a supplemental request needs to go out.
Gastroenterology Documentation Requirements
Procedure reports need to document findings, extent of examination, quality measures like bowel prep adequacy and cecal intubation rate, and the technique behind any intervention performed. We review every report against what each payer actually requires, before charge entry happens.
Accounts Receivable Follow-Up
GI AR gets reviewed weekly. Unpaid claims get pursued before filing deadlines close. Colonoscopy bundling disputes and polypectomy add-on downgrades get escalated with the procedure report and payer policy language that supports the original claim.
The Best Gastroenterology Billing Company in USA
Some of the most expensive billing errors in a GI practice don’t show up until someone actually looks for them. A polypectomy performed, but 45385 never billed because the coder defaulted to the diagnostic code. A screening colonoscopy converted to therapeutic without the PT modifier attached, which shorts the patient on cost-sharing and opens up a compliance problem for the practice. An ERCP case missing its fluoroscopy add-on. Credex Healthcare builds procedure-level review into every claim before it’s filed, so patterns like these don’t run unnoticed for months.
Claims Submission
Full gastroenterology insurance billing from procedure report review and charge entry through CPT and add-on code assignment to electronic submission, across Medicare, Medicaid, and commercial payers, for every endoscopy and office encounter.
Endoscopy Coding & Documentation
Correct codes and modifiers for every procedure type, every base and add-on code combination, every screening-to-therapeutic conversion. Fewer denials tied to documentation gaps, because the coding matched the report from the start.
Prior Authorization Management
Tracked from initiation through approval, confirmed current at time of service. A therapeutic conversion mid-case triggers an automatic check on whether the existing authorization still holds.
Denial Management & Appeals
Colonoscopy bundling disputes. Add-on code denials. Therapeutic conversion corrections. Prior authorization mismatches. Every appeal gets built around the procedure report language and payer policy that actually reverses the denial.
Credentialing & Payer Enrollment
Gastroenterologist enrollment, APP incident-to setup, endoscopy center facility enrollment, ongoing recredentialing. Your practice and facility keep billing without interruption as payer agreements renew.
Revenue Reporting & Analytics
Monthly reports on collections by procedure type and payer, denial trends by CPT code, colonoscopy conversion rate, billing turnaround, and AR aging. Practice administrators get the numbers they need to actually run the business.
12+
Years of GI Billing Expertise
100%
Provider & Facility Enrollment Success
99%
Claim Compliance Rate Across All Payers
Credex Healthcare, Leading Gastroenterology Billing Company
24/7 Support
Support Available for All Your Needs
100%
Customized GI Revenue Cycle Solutions
Specialties We are Offering
Our GI Billing Clients Say About Us
MD
Adaeze N
Practice Administrator
Achebe O
“Prior authorizations had become one of the biggest headaches in our GI practice. We have multiple physicians and two procedure locations, and occasionally a colonoscopy or upper endoscopy would be performed after an authorization had expired. We usually didn’t find out until the claim came back denied. Credex Healthcare introduced patient-level authorization tracking and connected it with our scheduling process. Since moving this work to their team, authorization-related denials have dropped to almost zero.”
Hepatology
Yulia K
“Hepatology billing was where we kept losing confidence in our previous billing team. Liver biopsy, FibroScan and chronic liver disease management were being treated like routine GI claims, and we discovered that some FibroScan services had even been coded like standard ultrasound procedures. That was the point where we knew we needed people who understood the specialty. Credex Healthcare went through our coding patterns, corrected the workflow and explained exactly where the problems were. I no longer have to second-guess whether our hepatology services are being billed correctly.”
Gastroenterology Practice Owner
Michael R
“Our denial report looked manageable on paper, but once Credex Healthcare reviewed it, they found we were repeatedly losing revenue on the same types of endoscopy claims. Modifier issues, medical-necessity documentation and payer-specific requirements were causing claims to bounce back. What impressed me was that they didn’t just keep resubmitting denials. They traced the problems back to the front end and coding workflow. Within a few months, we were seeing far fewer repeat denials and much cleaner reimbursements.”
Director of Operations
Sarah M
Our Systematic GI Billing Process
Practice Assessment
A full review of your current GI billing process, including how you record endoscopy charges, how long accounts receivable are aged by treatment type and payer, how denials are tracked by CPT code and reason, how you track colonoscopy conversions, and where prior permission gaps are. This makes it clear where collections are lacking and which mistakes need to be fixed first.
Credentialing & Payer Enrollment
Every GI doctor and APP is checked to make sure they are currently enrolled with payers, have the right specialty taxonomy, and have all of their credentials. The registration in an endoscopy center is checked on its own for any treatment room that your group uses.
Prior Authorization Setup
Before a patient is scheduled for a procedure, we make a list of all the procedure types and indications that need prior permission by the payer. We then link patient-level tracking to your scheduling process and make sure that the patient's authorization status is still valid.
Clean Claim Submission
As each procedure report is looked over, base and add-on codes are checked, screening-to-therapeutic modifiers are used correctly, and claims are sent electronically to Medicare, Medicaid, and private insurers for all the items in the billing queue.
Denial Management & Follow-Up
Every claim was tracked as it was decided. Within 48 hours, denials are looked over. When there are bundle disputes, add-on rejections, or prior authorization conflicts, each one gets its own specific appeal based on the procedure documentation and the payer policy that overturns it.
Reporting & Ongoing Optimization
Reports every month on trends in collections, denials, tracking conversion rates, response time, and the age of accounts receivable. Errors that happen over and over again are fixed at the charge-entry level, not case by case.
Ideal Gastroenterology Revenue Cycle Management for Practices
Picking a colonoscopy code and hitting submit isn’t gastroenterology billing services, not really. Screening-to-therapeutic conversions, add-on relationships for biopsy and polypectomy, ERCP fluoroscopy add-ons, endoscopic ultrasound documentation, payer-specific prior authorization rules for diagnostic endoscopy. All of it has to be right, on every case. A general billing company handles the routine claims fine and misses the nuance. Credex Healthcare stays in gastroenterology because the specialty needs people who work GI claims every day and already know where the money leaks.
GI-Specific Billing Expertise
We work gastroenterology claims, full stop. Colonoscopy codes and modifiers for screening, diagnostic, and therapeutic cases. Add-on relationships for biopsy and polypectomy. The exact spots where GI billing errors tend to repeat, in documentation and in charge capture.
Dedicated GI Account Management
One specialist assigned to your practice, who knows your procedure mix, your payer contracts, your endoscopy center setup, and the denial patterns specific to your claims. No re-explaining the account from scratch every time something comes up.
Transparent Monthly Reporting
Collections by procedure type and payer. Denial trends by CPT code. Screening-to-therapeutic conversion rate. AR aging. Turnaround time. Numbers that reflect where the practice and the facility actually stand financially.
HIPAA-Compliant Operations
Procedure reports, pathology results, and GI records stay under full HIPAA protocol throughout billing. Documented security standards and access controls apply across every system that touches your facility and professional claims.
Get More Out of Your GI Revenue with Credex Healthcare
Revenue leaks in a GI practice tend to run quietly for months before anyone catches them. Polypectomies billed as diagnostic colonoscopies. Screening-to-therapeutic conversions missing the PT modifier. ERCP fluoroscopy add-ons skipped because the charge capture template never got updated. An audit surfaces these in the first few weeks and puts a number on what they’ve cost.
Credex Healthcare starts with a free review of your current GI billing. That review covers what you’re owed by procedure and payer, your denial history by CPT code and reason, how accurate your base and add-on charge capture actually is, and any gaps in prior authorization tracking. No commitment required to get that picture. We calculate what can be recovered and what needs to change in the process so the same losses don’t repeat next quarter.
Frequently Asked Questions
What is gastroenterology billing, and how does it work?
Gastroenterology billing is how GI providers get paid for endoscopies, office visits, hepatology care, and advanced GI services. Each procedure carries a CPT code tied to the endoscopic method used and whatever was done during it. That code pairs with an ICD-10 diagnosis code proving medical necessity, and the claim has to go out with the right modifiers and prior authorization paperwork attached.
What CPT codes are commonly used in gastroenterology billing?
Common CPT codes used in gastroenterology billing cover upper gastrointestinal endoscopies, colonoscopies, and specialized diagnostic tests. Upper Endoscopy Codes 43 235: Diagnostic Esophagogastroduodenoscopy without biopsy. EGD with single or multiple biopsies (one of the highest-volume upper GI codes). EGD with lesion or tumor removal using a snare technique.
Does insurance cover GI procedures like colonoscopy?
Yes. Medicare, Medicaid, and private health plans all cover GI treatments when necessary and, in the case of colonoscopies, as preventive screenings. For people at average risk, Medicare covers a colonoscopy screening every 10 years, and they do not have to pay anything extra. Before scheduling any treatment, Credex Healthcare checks whether Medicare covers GI surgeries and reviews any payer-specific clearance requirements.
How long does gastroenterology billing reimbursement take?
When all the paperwork for the operation is in order and the right numbers are used, Medicare processes clean electronic GI claims in 14 to 30 days. Commercial payers usually pay within 30 days if there is prior authorization and a process report for every CPT code filed. Timelines for Medicaid vary by state but are usually between 30 and 60 days.
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