A6561 Gradient Compression Stocking HCPCS Reimbursement

HCPCS Level II code A6561 represents a custom, full-length (chap style) gradient compression stocking providing 40 mmHg or greater compression. As a form of custom durable medical equipment, this garment addresses advanced venous and lymphatic conditions that require high-compression therapy. Nationally, high-compression custom stockings figure into care plans for patients with chronic venous insufficiency, severe lymphedema, post-thrombotic syndrome, and certain post-surgical rehabilitation pathways, making accurate coding and coverage understanding important for both providers and payers.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what A6561 covers, typical service settings, and the clinical scenarios that drive use. The publication outlines benchmarking context and policy considerations relevant to coverage and claims processing, and it highlights documentation and justification themes commonly required for payment. Additionally, the report summarizes how A6561 fits into durable medical equipment workflows and notes where further payer-specific policy detail is typically needed.

Data not available in the input includes associated taxonomies, specific ICD-10 diagnoses, and related codes.

Billing Code Overview

HCPCS Level II code A6561 describes a gradient compression stocking, full length/chap style, 40 mmHg or greater, custom, each. This item is a custom-fabricated medical compression garment designed to provide therapeutic gradient compression of 40 mmHg or greater, typically intended for management of venous insufficiency, lymphedema, or other conditions requiring high-level compression.

Service Type: Custom medical durable medical equipment (compression garment)

Typical Site of Service: Durable medical equipment provider, outpatient clinic, or home fitting/dispensing setting

Clinical Context

A typical patient is an adult with chronic venous insufficiency, post-thrombotic syndrome, or significant lower-extremity edema who requires a custom-fitted, full-length (chap style) gradient compression stocking providing 40 mmHg or greater compression. The workflow begins in a vascular clinic, wound care center, or durable medical equipment (DME) supplier after evaluation by a vascular medicine specialist, internist, dermatologist, or wound care nurse. The clinician documents the medical necessity (e.g., chronic venous stasis with edema, recurrent venous ulceration, or lymphedema) and measures the limb for a custom stocking. A prescription specifying A6561 and the required compression level, length, laterality, and custom fitting is issued. The DME supplier performs custom fabrication or modification and fits the patient, provides usage and care instructions, and schedules follow-up to assess fit, skin integrity, and clinical response. Billing includes the A6561 HCPCS code, appropriate diagnosis code(s), and applicable modifiers for circumstances such as unusual procedural services, bilateral fitting, or supplier ownership of the stocking.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when significant additional work or complexity is required for custom measurement or fabrication beyond typical effort.

Taxonomy Code	Specialty	Notes
`207RG0100X`	Vascular Medicine	Clinicians who evaluate venous disease and prescribe compression therapy.
`207Q00000X`	Vascular Surgery	Surgeons who manage chronic venous insufficiency and related indications for compression.
`207RG0300X`	Wound Care Medicine	Specialists managing venous ulcers who order custom compression to promote healing.
`363L00000X`	Physical Medicine & Rehabilitation	Providers managing lymphedema and prescribing gradient compression garments.
`261QM0800X`	Medical Oncology (Supportive Care)	Oncologists managing lymphedema after cancer treatment may prescribe custom compression.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I87.2`	Venous insufficiency (chronic) (peripheral)	Primary indication for gradient compression to reduce ambulatory venous hypertension and edema.
`I83.019`	Varicose veins of unspecified lower extremity with ulcer, unspecified site	Compression stockings used to manage venous ulceration and prevent recurrence.
`I89.0`	Lymphedema, not elsewhere classified	Custom higher-strength stockings commonly indicated for lymphedema management.
`I80.2`	Phlebitis and thrombophlebitis of other deep vessels of lower extremities	Post-thrombotic syndrome and residual edema after deep vein thrombosis may require custom compression.
`L97.909`	Non-pressure chronic ulcer of unspecified part of lower limb, unspecified severity	Chronic lower-extremity wounds benefit from graduated compression as part of comprehensive care.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99203`	Office or other outpatient visit for the evaluation and management of a new patient, typically 30 minutes	Initial evaluation and medical necessity documentation before prescribing `A6561`.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Follow-up visit to assess fit, skin response, and continued need for the custom stocking.
`29580`	Application of multi-layer compression system (e.g., for venous ulcer)	May be performed prior to or alongside ordering a custom stocking to manage active venous ulceration.
`29540`	Strapping or wrapping of the lower extremity, not for orthopedic fixation	Used in clinic to manage edema while awaiting custom stocking fabrication.
`97035`	Ultrasound, therapeutic (e.g., for wound care adjunct)	Adjunctive therapy in wound care programs where custom compression is part of the treatment plan.

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Summary & Overview

HCPCS Level II A6561: Gradient Compression Stocking, Full-Length Custom