Medical Billing for Gastroenterology Practices

Gastroenterology Billing That Pays What You Earn

Gastroenterology billing is dominated by endoscopic procedure coding — colonoscopy, upper endoscopy, ERCP — where the difference between screening, diagnostic, and therapeutic codes can mean hundreds of dollars per procedure. Incomplete polyp documentation, missed add-on codes, and incorrect screening-to-diagnostic conversion are the most expensive billing errors GI practices make. 360Solutions provides GI-specialised billers who maximise procedure revenue, manage prior auth, and keep colonoscopy conversion coding compliant.

24%
avg GI revenue lost to endoscopy miscoding
$340
avg additional revenue per colonoscopy with correct coding
92%
first-pass rate for GI endoscopic claims
Gastroenterology Billing Challenges
Where practices lose the most revenue:
Screening-to-Diagnostic Conversion
Polyp Pathology Coordination
ERCP Bundling Complexity
Anesthesia Coordination
Gastroenterology Billing Challenges

Where Gastroenterology Practices Lose Revenue

These are the coding and billing pitfalls that cost gastroenterology practices the most — and where our specialised billers add the most value.

Screening-to-Diagnostic Conversion

When a screening colonoscopy becomes therapeutic (polyp removal), the code must convert from 45378 to 45380/45385. Failing to convert — or converting incorrectly — costs the practice the additional procedure value and risks compliance exposure.

Polyp Pathology Coordination

Colonoscopy coding depends on what was removed and how — cold snare, hot biopsy, EMR. Coders must wait for pathology results to assign definitive codes. We manage the pathology coordination workflow to ensure no claims are billed prematurely.

ERCP Bundling Complexity

ERCP codes (43260–43278) include numerous add-on codes for sphincterotomy, stent placement, stone extraction, and biopsy. Each service must be coded separately or bundled per NCCI rules. Errors here cost $200–800 per procedure.

Anesthesia Coordination

GI endoscopy often uses monitored anesthesia care (MAC) or propofol sedation. Professional anesthesia billing must be coordinated with the GI procedure claim to prevent duplicate billing and ensure correct POS codes.

Coding Intelligence

High-Risk CPT Groups

Code ranges payers audit most aggressively in Gastroenterology.

45378–45398
Colonoscopy — diagnostic, biopsy, polypectomy, EMR — by technique
43239–43259
Upper endoscopy (EGD) — biopsy, dilation, ablation add-ons
43260–43278
ERCP — with sphincterotomy, stent, stone removal — add-on codes
91010 / 91020
Esophageal motility study / gastric emptying study
45330–45346
Flexible sigmoidoscopy — with biopsy, polypectomy variants
Denial Intelligence

Common Denial Patterns

Knowing these before submission is the difference between a 60% and a 96% first-pass rate.

Screening colonoscopy not converted to therapeutic code after polyp removal

Colonoscopy add-on code billed without the primary endoscopy code

ERCP stent placement billed without documented stent type and size

Anesthesia and GI procedure billed by same provider (duplicate billing flag)

Prior auth not obtained for advanced endoscopic procedures (ESD, EMR)

Free Denial Audit

Send us your last 90 days of remittance data — we'll identify your top 3 fixable denial sources at no cost.

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Our Process

How 360Solutions Works for Gastroenterology Practices

01

Free 2-Week Billing Audit

We review your last 90 days: denial breakdown by category, AR aging by payer, charge lag, collection rate, and any recurring coding issues specific to your specialty. No commitment required.

02

Specialty Coder Assignment

You are paired with a coder trained specifically in gastroenterology coding. They learn your providers, your documentation patterns, and your payer mix before touching a claim.

03

Parallel Billing Transition

We run alongside your current billing for 10–14 days with zero cash flow disruption. Claims keep moving during the transition. Your account manager provides daily status updates.

04

Live KPI Dashboard

Real-time visibility into billed, paid, denied, AR aging, and collection rate — segmented by provider and payer. No black box, no month-end surprises.

05

Weekly Account Manager Call

Every week your dedicated account manager walks through last week's KPIs, denial trends, and any action items. Critical issues are escalated the same day — not at the next scheduled call.

Gastroenterology Billing FAQ

Questions From Gastroenterology Practices

We flag all colonoscopy claims pending pathology, then convert the code once results confirm the removal type. We apply Medicare PT modifier and commercial payer equivalents where the patient's cost-sharing changes based on the final code.
Yes. We can manage professional billing for both, ensuring the GI procedure and anesthesia claims use consistent dates, procedure codes, and POS — preventing the coordination errors that trigger duplicate billing flags.
Capsule endoscopy (91110/91111) requires prior auth from most payers and documentation of failed conventional endoscopy or a clinical indication that precludes standard scope. We manage the auth process and attach required documentation automatically.
Yes. We manage IV infusion codes, prior auth for biologics, step therapy documentation, and drug unit billing. We coordinate with the pharmacy for drug cost passthrough billing where applicable.
Ready to Fix Your Gastroenterology Billing?

Start With a Free,
No-Obligation Audit

Two weeks, no contract. A certified gastroenterology billing specialist reviews your claims, denial patterns, and AR — and shows you exactly what is recoverable.