CPT code 29820 denotes an arthroscopic synovectomy of the shoulder — an operative procedure in which a surgeon uses an arthroscope and instruments to inspect the joint and excise inflamed synovial tissue. This minimally invasive procedure addresses synovitis that causes pain and restricted motion and is commonly performed in hospital outpatient departments and ambulatory surgery centers. Nationally, accurate coding of 29820 matters for clinical documentation, appropriate facility and professional payment separation, and tracking use of arthroscopic shoulder interventions.

Key payers covered in this analysis 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, and which payers are commonly involved. The content highlights benchmarking and policy-relevant topics such as correct CPT designation, the operative nature of the service, and payer scope — enabling revenue cycle and compliance teams to align coding and billing workflows. Where specific payer policy details, modifier guidance, or diagnosis mappings are needed, readers should consult payer manuals and clinical documentation, as those specifics vary by contract and clinical scenario.

Data not available in the input: associated taxonomies, ICD-10 diagnoses, related codes, and service line detail beyond the procedure description.