CPT code 22858 identifies a second-level cervical total disc arthroplasty performed through an anterior approach during the same operative session as an initial cervical disc replacement. The surgeon removes the degenerated disc and associated osteophytes, decompresses neural elements, and implants an artificial mobile disc to preserve intervertebral motion. This code matters nationally because cervical total disc arthroplasty is a growing alternative to fusion for certain degenerative cervical conditions and affects surgical utilization, payer coverage policies, and device reimbursement across inpatient and ambulatory surgical settings. Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, common modifiers used with the code (list provided separately), and an outline of the topics typically covered in benchmarking and policy discussions such as utilization trends, coverage criteria, and coding compliance considerations. Data not available in the input for associated taxonomies, specific ICD-10 diagnoses, related procedure codes, and payer-specific payment amounts are noted as unavailable in the source material.