A6553 Below-Knee Compression Stocking HCPCS Reimbursement

HCPCS Level II code A6553 represents a custom, below-knee gradient compression stocking providing 30–40 mmHg of pressure, billed per each stocking. This code is used for durable medical equipment claims related to management of venous disease, edema, lymphedema, and post-procedural venous support. Nationally, appropriate coding for custom compression garments affects patient access to medically necessary therapy and impacts DME spending patterns.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for use of custom 30–40 mmHg below-knee stockings, common billing and service settings, and what to expect in payer coverage considerations. The publication summarizes typical reimbursement benchmarks, coding nuances, and policy updates affecting coverage and documentation requirements. It also provides operational guidance on documentation elements insurers commonly require for medical necessity determinations and tips for aligning durable medical equipment processes with payer rules.

This resource is intended for billing staff, compliance officers, clinicians ordering compression therapy, and supply vendors seeking a national view of coding, coverage, and administrative considerations for HCPCS Level II code A6553.

Billing Code Overview

HCPCS Level II code A6553 describes a gradient compression stocking, below knee, 30-40 mmHg, custom, each. This item is a custom-fitted medical compression stocking designed to provide graduated compression to the lower leg, typically used to manage chronic venous insufficiency, edema, lymphedema, venous ulcers, or to support venous return after venous procedures.

Service type: Durable medical equipment (custom fitted compression garment)
Typical site of service: Outpatient clinics, durable medical equipment suppliers, home health settings, and ambulatory care sites where custom fitting and dispensing occur.

Clinical Context

A 62-year-old ambulatory patient with symptomatic chronic venous insufficiency and unilateral lower-extremity edema is prescribed a custom, below-knee gradient compression stocking with 30–40 mmHg compression. The patient is evaluated in an outpatient vascular clinic where the vascular medicine specialist documents medical necessity, limb measurements, skin integrity, and any contraindications (e.g., arterial insufficiency). A certified fitter or durable medical equipment (DME) supplier obtains precise calf and ankle measurements to fabricate the custom stocking. The stocking is dispensed in the outpatient DME setting or clinic, with patient education on wear schedule, skin checks, laundering, and follow-up for fit and effectiveness. Typical supporting documentation includes the prescription/order, clinical notes describing diagnosis and functional limitation, measurement records, and supplier invoice. Expected sites of service are outpatient clinic, physician office, or DME supplier retail location.

Coding Specifications

Modifier	Description	When to Use
`LT`	Left side	When the stocking is for the left lower extremity
`RT`	Right side	When the stocking is for the right lower extremity

Taxonomy Code	Specialty	Notes
`207RP1000X`	Vascular Medicine Specialist	Prescribes compression therapy and documents medical necessity
`207RN0400X`	Wound Care Specialist	Manages venous stasis dermatitis, ulcers; prescribes compression
`261QM0800X`	Orthotist/Prosthetist	Measures and fits custom compression garments when applicable
`263V00000X`	Durable Medical Equipment Supplier	Dispenses and bills the custom stocking
`207L00000X`	Cardiovascular Disease Specialist	Manages chronic venous insufficiency and prescribes compression

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I87.2`	Venous insufficiency (chronic) (peripheral)	Primary diagnosis indicating chronic venous insufficiency for which compression stockings are prescribed
`I83.011`	Varicose veins of right lower extremity with ulcer of thigh	Compression stockings are part of conservative management for varicose veins and venous ulcer prevention/treatment
`I83.012`	Varicose veins of left lower extremity with ulcer of thigh	Same clinical relevance for the left side
`L97.321`	Non-pressure chronic ulcer of right calf limited to breakdown of skin	Compression therapy supports venous ulcer healing and edema control
`R60.0`	Localized edema	Symptom indication for graduated compression to reduce limb swelling

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`94640`	Pressurized medicament administration, inhalation therapy, per day	Data not relevant; no related CPT codes were provided
`99499`	Unlisted evaluation and management service	May be used in rare circumstances for nonstandard patient education but not typical
`99070`	Supplies and materials provided by physician over and above those usually included with the office visit	Used when additional customized supplies are provided during clinic visit
`97110`	Therapeutic exercises to develop strength and endurance	May be billed when a physical therapist provides gait or strength training related to lower-extremity edema management
`97760`	Assistive technology assessment (e.g., for bracing/orthotics)	May be used when an orthotist assesses and documents need for custom compression

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Summary & Overview

HCPCS A6553: Below-Knee Custom Gradient Compression Stocking, 30–40 mmHg