2027 Gastroenterology Reimbursement and Coding Update (Virtual) | November 2026-Reimbursement Deep-Dive_Practice Expense, Efficiency and G2211 Updates

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Edward Sun’s presentation reviews Medicare reimbursement changes affecting gastroenterology, including efficiency adjustments, practice expense, G2211, and endoscopic submucosal dissection (ESD).<br /><br />Beginning in 2026, CMS applies a 2.5% work-RVU reduction to non-time-based codes, excluding evaluation and management (E/M) services. CMS says the adjustment reflects productivity gains and concerns about how service values are estimated; it expects to apply similar adjustments periodically.<br /><br />G2211 is an E/M add-on code for office visits involving either ongoing care that serves as the focal point for a patient’s health needs or continuing management of a serious or complex condition. Eligibility depends on the longitudinal care relationship and clinician responsibility—not diagnosis alone. The need for the code should be documented in the assessment and plan. It generally cannot be billed with an E/M service reported using modifier 25. Certain isolated consultations or post-procedure follow-ups without ongoing management do not qualify.<br /><br />For ESD, the presentation emphasizes detailed documentation of the procedure’s complexity, physician work, time, intensity, risks, and equipment. It also recommends a cover letter explaining the procedure’s advantages over surgery and entering a comparable CPT code when billing under an unlisted code.<br /><br />Starting January 1, 2027, new Category 1 codes will replace the unlisted-code framework: 43498 for upper-GI ESD and 45991 for lower-GI ESD, including mucosal closure when performed. Their work RVU values are 15.0 and 16.38, respectively. The codes are intended to make ESD work more consistently identifiable and measurable. CMS has also assigned ESD to hospital outpatient APC 5331, with a finalized 2027 facility payment of $7,083. The presentation identifies this as a significant advocacy success and notes that ASGE guidance on ESD coding, documentation, and reimbursement is forthcoming.

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Edward Sun, MD, MBA, FASGE

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Concept CMS efficiency adjustment

Concept Endoscopic Submucosal Dissection

Concept Work RVU

Concept HCPCS G2211

Concept Unlisted CPT Code

Keywords

Medicare reimbursement

gastroenterology

CMS

work RVU reduction

practice expense

G2211

evaluation and management

endoscopic submucosal dissection

CPT codes

hospital outpatient APC

CMS efficiency adjustment

Endoscopic Submucosal Dissection

Work RVU

HCPCS G2211

Unlisted CPT Code