C9777 Esophageal mucosal integrity testing by electrical impedance, transoral, includes esophagoscopy or esophagogastroduodenoscopy

Short descriptor: Esophag muc integ w/eso egd

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C9777 is the HCPCS Level II code for Esophageal mucosal integrity testing by electrical impedance, transoral, includes esophagoscopy or esophagogastroduodenoscopy (2026). It belongs to Section C — Outpatient PPS (Hospital). Under Medicare, its coverage status is: Special coverage instructions apply. Part B pricing methodology: Statute.

Classification & CMS Attributes

Medicare Coverage
Special coverage instructions apply (code D)
Part B Pricing
Statute (indicator 53)
Type of Service
Surgery
Effective Date
2022-01-01
2026 Maintenance
No change this year

References

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Reference C9777 with the canonical source and edition:

C9777 — Esophageal mucosal integrity testing by electrical impedance, transoral, includes esophagoscopy or esophagogastroduodenoscopy. ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/C9777

Canonical URL: https://icd10codingpro.com/hcpcs-codes/C9777

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2026-01-01

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