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    v1.0.31
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a6594-gradient-compression-bandage-liner-lower-extremity
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    HCPCS Level II A6594: Gradient Compression Bandage Liner, Lower Extremity

    HCPCS Level II code A6594 describes a gradient compression bandaging supply: a bandage liner for the lower extremity, any size or length, billed per each; this item is a durable medical supply used as part of compression therapy for venous insufficiency or lymphedema, typically provided in an outpatient durable medical equipment setting or in a clinic where wound care or vascular services are delivered.

    For related coverage guidance, see recent payer policy updates: Diabetic Supplies, Radiofrequency Ablation for Thyroid Nodules, Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Idaho Only).

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    Clinical & Coding Specifications

    Clinical Context

    A patient with chronic venous insufficiency and symptomatic lower‑extremity edema presents to a wound care clinic for management. The clinician assesses venous stasis changes, mild to moderate pitting edema, and dependent aching. After evaluation, the clinician determines that a gradient compression bandaging system is appropriate to reduce edema and support venous return. A bandage liner for the lower extremity, coded as A6594, is applied beneath compression bandages to provide skin protection, moisture control, and improved graduated compression interface. Typical workflow: the patient is triaged and vitals obtained; the clinician documents wound/edema assessment and measurements; the skin is cleansed and protected; the A6594 bandage liner is applied to the calf/ankle/foot as indicated; overlying compression wrap or multilayer system is applied; documentation includes diagnosis code(s), item code A6594, quantity, laterality (RT or LT if applicable), servicing provider taxonomy, and any applicable modifier (for example RT, LT, or NU for new supplies). Typical site of service is an outpatient wound care clinic, durable medical equipment supplier visit, home health visit, or outpatient physician office visit when supplies are furnished and applied during treatment.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    29580Application of multi‑layer compression system; legOften performed at the same visit when A6594 liner is used under a multilayer compression application
    29581Application of multi‑layer compression system; ankle and footUsed when compression involves ankle/foot in addition to the liner A6594
    97018Paraffin bath; therapeutic procedureUsed occasionally in wound care visits preceding bandage application for skin preparation
    97597Debridement (selective) of open wound, first 20 sq cmWound debridement performed prior to applying compression liner when indicated
    G0245Special therapeutic procedures (e.g., wound therapy), per sessionUsed by some payors for complex wound care sessions where supplies like A6594 are furnished

    Related Modifiers

    5 rows

    ModifierDescriptionWhen to Use
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
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    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    208M00000X
    225100000X
    2083S0010X
    207PE0004X
    282NC2000X
    224900000X
    1835C0205X
    2080B0002X

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    10 rows

    PolicyPayerEffective Date
    Diabetic SuppliesCigna2026-10-15
    Radiofrequency Ablation for Thyroid NodulesCigna2026-10-15
    Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Idaho Only)UnitedHealthcare2026-10-01
    Tzield (teplizumab-mzwv) CoverageUnitedHealthcare2026-10-01
    Continuous Glucose Monitoring and Insulin Delivery for Managing Diabetes (for Indiana Only)UnitedHealthcare2026-10-01
    Medical Necessity Guidelines Insulin PumpsMass General Brigham Health Plan2026-10-01
    Medical Necessity Guidelines: Continuous Glucose MonitorsMass General Brigham Health Plan2026-10-01
    Continuous Glucose MonitoringAmbetter Nevada2026-10-01
    Salivary Hormone TestingOscar Health2026-10-01
    Bone Turnover Markers TestingOscar Health2026-10-01

    Related Codes

    HCPCS-A4206-STERILE-SYRINGE-1CC-NEEDLE

    HCPCS A4206: Syringe with Needle, 1 cc or Less, Sterile

    HCPCS-A4207-STERILE-2CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4207: Syringe with Needle, Sterile 2 cc

    HCPCS-A4208-STERILE-3CC-SYRINGE-WITH-NEEDLE

    HCPCS Level II A4208: Syringe with Needle, Sterile 3 cc

    HCPCS-A4209-STERILE-SYRINGE-WITH-NEEDLE-5CC-OR-GREATER

    HCPCS Level II A4209: Syringe with Needle, Sterile 5 cc or Greater

    HCPCS-A4210-NEEDLE-FREE-INJECTION-DEVICE

    HCPCS Level II A4210: Needle-free Injection Device, Each

    HCPCS-A4211-SUPPLIES-SELF-ADMINISTERED-INJECTIONS

    HCPCS Level II A4211: Supplies for Self-Administered Injections

    HCPCS-A4212-NON-CORING-NEEDLE-STYLET-CATHETER-ACCESS-SUPPLY

    HCPCS Level II A4212: Non-coring Needle or Stylet with/without Catheter

    HCPCS-A4213-STERILE-SYRINGE-20CC-OR-GREATER

    HCPCS Level II A4213: Syringe, Sterile, 20 cc or Greater, Each

    HCPCS-A4215-STERILE-NEEDLE-SINGLE-EACH

    HCPCS Level II A4215: Needle, Sterile, Any Size

    HCPCS-A4216-STERILE-DILUENT-FLUSH-10ML

    HCPCS Level II A4216: Sterile Diluent/Flush, 10 ml

    Showing 1–10 of 633

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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