Gastroenterology Billing Services in Maryland

Maryland's gastroenterology practices face unique billing challenges shaped by CareFirst BlueCross BlueShield's commercial rules, Maryland Medicaid (HealthChoice managed care program) requirements, and Novitas Solutions (Jurisdiction L) Medicare policies. Our AAPC-certified coders specialize in both MD payer rules and gastroenterology coding complexity.

AAPC Certified
MD Payer Expert
Gastroenterology Specialists
2.49% Rate
Last reviewed: May 2026Reviewed by the Go Medical Billing Editorial TeamAAPC-certified coders
22,000+MD Physicians
2.49%Starting Rate
9Medicaid MCOs
98%+Clean Claim Rate

Why Maryland Gastroenterology Practices Need Specialized Billing

Maryland's healthcare market includes 22,000+ physicians, and gastroenterology practices here face a payer market dominated by CareFirst BlueCross BlueShield on the commercial side and Maryland Medicaid (HealthChoice managed care program) on the public payer side. Medicare claims are processed through Novitas Solutions (Jurisdiction L), which applies its own Local Coverage Determinations that directly affect gastroenterology procedure coverage and medical necessity requirements. Generic billing teams without MD specific knowledge leave revenue on the table.

Gastroenterology billing itself is complex. GI billing centers on endoscopy coding. When a screening colonoscopy (45378) finds a polyp, it becomes a diagnostic procedure with different coding and cost-sharing rules. Getting this conversion right affects both provider reimbursement and patient billing. When you combine this coding complexity with Maryland's specific payer rules, authorization requirements, and 9 Maryland Medicaid (HealthChoice managed care program) managed care plans that each have their own billing rules, you need a team that understands both dimensions. Go Medical Billing provides that expertise at 2.49% of collections, serving gastroenterology practices from Baltimore to Frederick and across Maryland.

2026 Maryland Medicare Allowables for Gastroenterology CPT Codes

These are the 2026 Medicare allowable amounts for gastroenterology CPT codes in Maryland, processed under Novitas Solutions (Jurisdiction L). Allowables are locality-adjusted, so MDrates differ from other states — the highest-value gastroenterology code below pays $834.35 non-facility here. Compare any code across states with our Medicare fee calculator by state.

Code
Description
Non-Facility
Facility
Upper GI endoscopy with biopsy
$434.67
$126.86
Diagnostic upper GI endoscopy (EGD)
$334.63
$113.53
EGD with esophageal dilation over guide wire
$474.99
$151.85
Diagnostic colonoscopy
$391.51
$169.01
Colonoscopy with biopsy
$497.44
$182.31
Colonoscopy with polypectomy by snare
$517.46
$229.15
Colonoscopy with ablation of tumor or polyp
$297.55
$297.55
Capsule endoscopy of esophagus through ileum
$834.35
$834.35
Established patient office visit, low MDM
$98.06
$58.72

Source: 2026 Medicare Physician Fee Schedule, MD locality (Novitas Solutions (Jurisdiction L)). Commercial CareFirst BlueCross BlueShield rates typically run above these benchmarks; Maryland Medicaid (HealthChoice managed care program) rates run below. Figures for reference, not a guarantee of payment.

The Maryland Market Context for Gastroenterology Practices

Maryland has about 22,000 physicians and the most unusual hospital reimbursement structure in the country. Under a federal waiver, the Maryland Health Services Cost Review Commission sets hospital rates that apply equally to all payers including Medicare, Medicaid, commercial insurers, and self-pay patients. This means a Maryland hospital charges the same rate for the same service regardless of payer. The All-Payer Model has been in place in some form since 1977 and was renewed as the Total Cost of Care Model in 2019. The HealthChoice Medicaid managed care program runs through nine MCOs, including unique provider-based plans like Priority Partners (Johns Hopkins HealthCare) and MedStar Family Choice (MedStar Health). The Baltimore-Washington corridor concentrates most of the state's physicians, with Johns Hopkins, MedStar Health, and University of Maryland Medical System as the three anchor academic systems. Maryland's Medicaid program ran a 2024 health equity incentive program that distributed payments based on socioeconomic disadvantage scores across the state.

Maryland-specific factors that shape gastroenterology reimbursement: Maryland is the only state with an All-Payer Model under federal waiver. Hospital rates are set by the Health Services Cost Review Commission and apply equally to Medicare, Medicaid, commercial, and self-pay. The model has been in place since 1977 and was renewed as the Total Cost of Care Model in 2019.; Maryland's HealthChoice program runs through nine MCOs, including provider-owned plans like Priority Partners (Johns Hopkins HealthCare) and MedStar Family Choice (MedStar Health). This is more provider-affiliated MCOs than any other state.; The 2024 HealthChoice agreement allocated health equity incentive payments ranging from about $226,000 for Aetna to about $2.2 million for Priority Partners, based on MCO membership in jurisdictions with the highest socioeconomic disadvantage scores.. Our MD coders build these into every gastroenterologyclaim — see how this works alongside our Maryland medical billing and gastroenterology billing teams.

Maryland Payer Challenges for Gastroenterology

Every MD payer has specific rules for gastroenterology claims. Here's how we navigate them.

CareFirst BlueCross BlueShield Gastroenterology Claims

CareFirst BlueCross BlueShield processes the largest share of Maryland commercial gastroenterology claims. We know their MD specific fee schedules, prior authorization requirements for gastroenterology procedures, and their appeal timelines when claims are denied. When a screening colonoscopy finds pathology, the coding changes. This affects cost-sharing and requires correct diagnosis code sequencing.

Maryland Medicaid (HealthChoice managed care program) Gastroenterology Billing

Maryland Medicaid (HealthChoice managed care program) routes gastroenterology patients through 9 managed care plans: Aetna Better Health of Maryland, CareFirst BlueCross BlueShield Community Health Plan Maryland, Jai Medical Systems, and 6 more. Each MCO has its own gastroenterology authorization and billing rules that we manage.

Medicare (Novitas Solutions (Jurisdiction L)) Gastroenterology Coverage

Novitas Solutions (Jurisdiction L) processes Medicare gastroenterology claims in Maryland with its own Local Coverage Determinations. We navigate Novitas Solutions (Jurisdiction L)'s policies around multiple procedure endoscopy to prevent medical necessity denials.

Denial Prevention for Maryland Gastroenterology

Common gastroenterology denials in Maryland include when a screening colonoscopy finds pathology, the coding changes and when both colonoscopy and egd are done same session, specific modifier and code rules apply. Our team catches these issues before submission and appeals aggressively with MD payer-specific documentation when denials occur.

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What We Handle for Maryland Gastroenterology Practices

Colonoscopy coding (screening and diagnostic)
EGD and upper endoscopy billing
Capsule endoscopy coding
Motility study billing
Same-day multi-procedure coding
ASC vs office-based endoscopy billing

Maryland Gastroenterology Billing Cost Comparison

Hiring an in-house biller with gastroenterology expertise in Maryland costs $42K-$55K annually in salary alone. Add benefits, software, clearinghouse fees, and office space, and the true cost is even higher. At 2.49% of collections, Go Medical Billing provides an entire team of AAPC-certified gastroenterology coders and MD payer specialists for a fraction of that cost.

$42K-$55K

In-House Biller Salary

+ benefits, software, space

2.49%

Go Medical Billing Rate

Full team, all services included

60-80%

Typical Cost Reduction

With better results

Frequently Asked Questions

All major MD payers: CareFirst BlueCross BlueShield, Aetna, Cigna, UnitedHealthcare, Kaiser Permanente Mid-Atlantic, Maryland Medicaid (HealthChoice managed care program) (including Aetna Better Health of Maryland, CareFirst BlueCross BlueShield Community Health Plan Maryland, Jai Medical Systems), and Medicare through Novitas Solutions (Jurisdiction L). If a payer accepts gastroenterology patients in Maryland, we submit and follow-up on claims with them.
The most frequent gastroenterology denials we see from MD payers include when a screening colonoscopy finds pathology, the coding changes, when both colonoscopy and egd are done same session, specific modifier and code rules apply, asc vs office-based endoscopy has different coding and reimbursement rules. Our team catches these before submission by applying both gastroenterology coding expertise and MD payer-specific rules to every claim.
Maryland Medicaid (HealthChoice managed care program) routes gastroenterology patients through 9 managed care plans: Aetna Better Health of Maryland, CareFirst BlueCross BlueShield Community Health Plan Maryland, Jai Medical Systems, Kaiser Permanente, Maryland Physicians Care, MedStar Family Choice, Priority Partners (Johns Hopkins HealthCare), UnitedHealthcare, Wellpoint Maryland. Each MCO has its own gastroenterology authorization requirements, fee schedules, and billing rules. We credential and bill with all of them so your gastroenterology practice gets paid correctly.
Most MD gastroenterology practices are fully transitioned within two to three weeks. We connect to your EHR, learn your gastroenterology workflows, and start submitting claims to CareFirst BlueCross BlueShield, Maryland Medicaid (HealthChoice managed care program), Medicare, and all your MD payers with no downtime.

Fix Your Maryland Gastroenterology Billing

Call 888-701-6090 for a free billing assessment specific to your MD gastroenterology practice. We'll show you where revenue is leaking and how to fix it.