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

HCPCS Level II code · C codes: Outpatient PPS (Hospital Outpatient)

Active code Special coverage instructions apply

HCPCS codeC9777
Long description
Esophageal mucosal integrity testing by electrical impedance, transoral, includes esophagoscopy or esophagogastroduodenoscopy
Short description
Esophag muc integ w/eso egd
Pricing indicator
53 Statute
Medicare coverage
D Special coverage instructions apply
BETOS category
P8B Endoscopy - upper gastrointestinal
ASC
Approved for ambulatory surgical centers
Added
April 1, 2021
Last change
January 1, 2022 – No change

Frequently asked questions

What is HCPCS code C9777?

C9777 is a HCPCS Level II code for esophageal mucosal integrity testing by electrical impedance, transoral, includes esophagoscopy or esophagogastroduodenoscopy.

Does Medicare cover C9777?

The HCPCS file lists coverage code D: Special coverage instructions apply. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby C codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.