HCPCS Level II code A4364 denotes a billed supply of liquid adhesive (per ounce) used for topical wound closure, device attachment, or other minor procedural purposes. Nationally, supply codes like A4364 matter because they impact facility and outpatient cost reporting, inventory management, and payer coverage determinations for consumable products used in ambulatory care.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of how this supply code is classified, typical sites of service where it is billed, and the clinical contexts in which liquid adhesive is used. The publication outlines benchmarks for supply utilization and billing, summarizes relevant policy or coverage considerations for major payers, and situates the code within clinical workflows that use topical adhesives.

This summary provides practical context for billing staff, revenue cycle professionals, and policy analysts seeking a clear understanding of what A4364 represents, which payers commonly encounter the code, and what areas—such as billing practices and payer coverage—readers should review when managing claims for liquid adhesive supplies.