HCPCS Level II code C1818 designates an integrated keratoprosthesis, an implanted prosthetic corneal device used in patients with advanced corneal pathology when standard penetrating or lamellar keratoplasty is not viable. This code captures a specialized ophthalmic surgical implant with implications for device coverage, surgical facility billing, and post-implant follow-up care. Nationally, accurate coding of keratoprosthesis procedures affects facility reimbursement, device-specific payment policies, and access to advanced corneal interventions.

Key payers in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on clinical context and service setting, plus what to expect from payer interactions: typical coverage considerations, relevant claims components, and where policy variation commonly occurs. The publication provides benchmarks for utilization and reimbursement patterns where available, summarizes pertinent payer policy trends, and highlights clinical factors that influence billing and coding for implanted keratoprosthesis procedures.

This executive summary is intended for administrators, coding professionals, and clinical leaders seeking a national perspective on HCPCS Level II code C1818, its role in ophthalmic surgical billing, and the key issues that affect payer coverage and facility claims handling.