CPT code 23470 denotes glenohumeral joint hemiarthroplasty, an orthopedic surgical procedure replacing the humeral head with a prosthetic implant while leaving the glenoid intact. The code is used when shoulder joint disease or injury primarily affects the humeral head and a partial joint replacement is clinically indicated. Nationally, this procedure is relevant for orthopedic surgery utilization, hospital surgical volume, and joint-replacement cost and quality monitoring.

Key payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the service, typical sites of care, common modifiers, and guidance on coding relationships where available. The publication summarizes benchmarks and reimbursement patterns, highlights policy updates affecting joint-replacement coverage, and outlines clinical considerations that influence coding and site-of-service decisions.

The report provides practical reference material for billing and coding teams, revenue cycle managers, and policy analysts, including common billing modifiers supplied in the input and notes on when hemiarthroplasty is selected over total shoulder arthroplasty. Data not available in the input are explicitly noted where applicable.