CPT code 66983 represents surgical removal of the cataractous lens and capsule as one unit followed by insertion of an intraocular lens prosthesis. This procedure is a core intervention in ophthalmology to restore vision impaired by cataract and is widely performed across ambulatory surgical centers, hospital outpatient departments, and specialized eye surgery centers. Nationally, cataract surgery is one of the most frequently billed surgical services, making accurate coding and coverage determinations for 66983 important for clinical workflow and payer reimbursement.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical and billing context for 66983, including common sites of service and service type, plus an overview of coverage considerations and benchmarking topics relevant to national payers. The publication covers typical billing patterns, common modifiers and claims considerations (listed elsewhere), and points of interest for policy and utilization management. Data not available in the input is noted where applicable. The goal is to provide clinicians, billing specialists, and policy analysts with a clear, national-level summary of what CPT code 66983 denotes and why it matters in surgical ophthalmology and payer interactions.