C9777 Esophag muc integ w/eso egd

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

• Medicare coverage: Special coverage instructions apply
• Status: active (July 2026 file)
• MUE: max 1 units per day (practitioner), rationale: Nature of Service/Procedure