Gastroenterology Medical Billing Services
Colonoscopy Coding Is Where Most GI Revenue Is Won or Lost
Gastroenterology has a billing problem that almost no other specialty shares. The same procedure can be preventive, diagnostic, or therapeutic depending on what the scope finds, and the coding, the modifier, and the patient’s financial responsibility all change mid procedure.
Get that wrong and you either write off money you earned or bill a patient for a screening that should have cost them nothing. Both are expensive, and the second one generates complaints.
Where G Billing Goes Wrong
Screening that becomes diagnostic
A patient presents for a screening colonoscopy. A polyp is found and removed. The procedure is now therapeutic, but it started as preventive, and how that gets coded determines whether the patient owes a deductible they were told they would not owe. Modifier 33 and modifier PT exist for this, and they get missed constantly.
Polypectomy technique drives the code
Snare, cold biopsy forceps, hot biopsy, EMR. These are different codes with different reimbursement, and the operative note frequently does not specify which technique was used on which lesion.
Multiple lesions, multiple techniques
When different removal methods are used in the same session, each is separately reportable with the right modifier. Practices routinely bill one and lose the rest.
Facility and professional splits
ASC, hospital outpatient, and office based procedures bill differently. Groups with ownership in an ASC need both sides handled correctly or the same case gets underbilled twice.
What We Handle
- Charge entry and coding review against your documentation
- Claim submission and clearinghouse rejection management
- Denial classification by reason, source, and cause with actionable feedback to your team
- Accounts receivable follow up and payer escalation
- Payment posting and reconciliation
- Patient billing inquiries through our dedicated toll free line
- Monthly financial reporting so you can see what is actually happening
You keep your EHR and your workflow. We integrate with PrognoCIS, athenahealth, AdvancedMD, gGastro, Sevocity, eClinicalWorks, and Open Practice, among others.
Proof We Do This Work
Gregory Corbett, CEO of Digestive Health Partners, came to us after thirty five years leading hospitals and reorganizing revenue cycle departments. He was against outsourcing RCM.
His words: our team’s expertise, transparency, and accessibility took their revenue cycle to an unparalleled level of excellence.
We also integrate directly with gGastro, so GI practices do not have to change systems to work with us.
Why Medicus
Cyndi Walker founded Medicus after decades inside medical billing, and holds Certified Medical Coder and Certified Healthcare Business Consultant credentials. Medicus carries corporate accreditation from HBMA and the National Society of Certified Healthcare Business Consultants.
We are not a call center and we do not route your account offshore. You get people who know your specialty and answer the phone.
Common Questions
A screening colonoscopy found a polyp. What should the patient owe?
If it began as a screening, modifier 33 or PT should be applied so the preventive benefit still governs cost sharing. Applied correctly, in most commercial and Medicare situations the patient owes nothing or substantially less than a straight diagnostic claim would produce. Applied incorrectly, they get a bill they were told they would not get.
Do you work with gGastro?
Yes. We integrate with gGastro along with PrognoCIS, athenahealth, AdvancedMD, Sevocity, eClinicalWorks, and Open Practice. You do not change systems to work with us.
We own our ASC. Can you bill both sides?
Yes, and that is where a lot of GI groups lose money. The facility claim and the professional claim have to reconcile, and when they are handled by different parties without coordination, cases get underbilled on one side or both.
Our Services Include
What Our Clients Are Saying

We’ve worked with Cyndi Walker and her team at Medicus since 2023 to enhance our RCM function and strategy. With 35 years of experience leading large hospitals and reorganizing RCM departments, I was initially against outsourcing RCM. However, Cyndi and her team’s expertise, transparency, and accessibility have taken our RCM to an unparalleled level of excellence. We highly value our partnership with Medicus and recommend them to anyone looking to improve their RCM performance.Â

I highly recommend Cyndi Walker and Medicus Billing and Consulting, Inc. Cyndi and her team are highly knowledgeable and responsive- my clients always enjoy working with them! And their commitment to compliance is important and valuable. I highly recommend Cyndi and her team!

Cyndi and her team at Medicus are one of the select billing companies that we refer our clients to because we trust them, and they take great care of our clients, and they boost profitability too! You can’t go wrong with Medicus.

I have been a client of Medicus since 2013. I am very pleased with the ongoing support and excellent service of the Medicus Team. It has been a relief to have a partner to handle the business side of medicine.

We have two clients, a Vascular Surgeon and OBGYN that have been using Medicus, and we are extremely happy with the service and attention to detail. I highly recommend Medicus for your practice and recommend them routinely to my clients.

I have been a client of Medicus for 7 years. I am very pleased with the ongoing support and excellent service of the Medicus Team. It has been a relief to have a partner to handle the business side of medicine.

Medicus took over my billing in 2017, and I have been extremely happy. They are available at all times to discuss a problem. My collections have dramatically improved. I would recommend them to anyone.

My experience with the team was wonderful. They do a great job and relieve you of managing the billing. I highly recommend them to any group struggling with billing issues.
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