Summary & Overview
HCPCS A4500: Surgical Stockings Below Knee, Each
HCPCS Level II code A4500 designates a single below-knee surgical stocking, a durable medical supply commonly used for postoperative compression, venous disease management, and thromboprophylaxis. Nationally, coverage and payment for compression stockings affect outpatient surgical care, DME supply chains, and post-acute management, making this code relevant for providers, billing teams, and payers managing cost and clinical protocols.
This publication examines coverage stance and typical use across major payers, including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what A4500 represents, who covers it, and where it is typically furnished. The analysis highlights reimbursement benchmarks, billing considerations, and clinical context for use in outpatient clinics, surgical centers, hospital outpatient departments, and durable medical equipment suppliers. Policy updates and payer-specific requirements are summarized where available.
The report is intended to help billing professionals and administrators understand coding implications, documentation needs, and common payment patterns for single below-knee surgical stockings without providing prescriptive recommendations.
Billing Code Overview
HCPCS Level II code A4500 describes surgical stockings below knee length, each. This item is a durable medical supply used to provide graduated compression to the lower leg for postoperative recovery, venous insufficiency management, or thromboprophylaxis as indicated by clinical care.
-
Service type: Durable medical supply / compression garment
-
Typical site of service: Outpatient clinics, surgical centers, hospital outpatient departments, and durable medical equipment providers
Clinical & Coding Specifications
Clinical Context
A typical patient is a postoperative adult who requires unilateral or bilateral below-knee surgical compression stockings to reduce risk of deep vein thrombosis (DVT) and manage postoperative leg edema. For example, a 68-year-old ambulatory patient undergoing total knee arthroplasty is fitted with a pair of A4500 below-knee surgical stockings before discharge. The clinical workflow includes: preoperative assessment of venous thromboembolism risk, intraoperative or immediate postoperative order for mechanical prophylaxis, measurement of leg circumference/length for correct stocking size, documentation of medical necessity and laterality (left/right), application by nursing staff, and follow-up assessment of skin integrity and fit during the inpatient stay and at first postoperative visit. Stockings may be replaced if damaged or soiled; each stocking is billed individually as A4500 per unit in accordance with the supplier/clinical documentation and payer rules.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Apply when the stocking is furnished for the left lower extremity |
RT |