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    v1.0.28
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a6536-gradient-compression-stocking-full-length-18-30-mmhg
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    HCPCS Level II A6536: Gradient Compression Stocking, Full Length/Chap, 18-30 mmHg

    HCPCS Level II code A6536 describes a gradient compression stocking, full length/chap style, providing 18–30 mmHg compression; service type: durable medical equipment (compression garment) for management of venous insufficiency, edema, or post-thrombotic care; typical site of service: outpatient clinics, durable medical equipment providers, or home use as fitted by a clinician.

    For related coverage guidance, see recent payer policy updates: Salivary Hormone Testing, Bone Turnover Markers Testing, Parathyroid Hormone, Phosphorus, Calcium, and Magnesium Testing.

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    Clinical & Coding Specifications

    Clinical Context

    A patient with chronic venous insufficiency or symptomatic superficial venous disease is evaluated in an outpatient vascular clinic. The clinician documents indications such as leg swelling, heaviness, varicosities, or history of venous ulceration and prescribes gradient compression stockings to reduce edema, improve venous return, and support healing. A licensed clinician (vascular surgeon, wound care specialist, or primary care provider) measures the patient’s limb for a full-length/chap style stocking and writes an order specifying compression strength 18-30 mmHg and laterality (LT or RT) if applicable. The durable medical equipment (DME) supplier dispenses one stocking per order, verifies Medicare or commercial payer coverage, and bills using HCPCS Level II code A6536 for each stocking supplied. Typical sites of service include outpatient vascular clinics, wound care centers, home health visits, and DME supplier locations. Common workflow elements: referral/diagnosis documentation, measurement and fitting, supplier verification of payer and medical necessity, delivery or pickup, and documentation of patient education on application, wear schedule, and replacement timing.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99173Screening test of visual acuity, quantitative, with instrumentData not available in the input.
    97039Unlisted modality (specify)Used in wound care settings when adjunctive therapies are provided alongside compression
    29582Application of multi-layer compression system; leg (below knee)Performed when multilayer compression bandaging is applied prior to or instead of compression stockings
    99213Office or other outpatient visit for the evaluation and management of an established patientOften used to document the visit where the stocking is prescribed and medical necessity is established
    99070Supplies and materials (non-covered)Used by some suppliers to bill for non-covered items or additional supplies furnished with A6536

    Related Modifiers

    5 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    P5Modifier P5 denotes a moribund patient who is not expected to survive without the operative procedure and is used only with anesthesia CPT codes 00100–01999. The anesthesia provider must append P5…- Use modifier P5 only when the anesthesia provider determines the patient is moribund and not expected to survive without the operation, and append it only to anesthesia CPT codes 00100–01999…
    90Modifier ‑90 (Reference/Outside Laboratory) indicates that a laboratory test was performed by an entity other than the treating or reporting provider. The American Medical Association defines…- Use CPT modifier -90 when a laboratory test is performed by an outside/reference laboratory (an entity other than the treating or reporting physician or qualified professional) and the claim needs…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207P00000XEmergency Medicine PhysicianAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospit…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    207Q00000XFamily Medicine PhysicianFamily Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadt…
    3336C0002XClinic PharmacyA pharmacy in a clinic, emergency room or hospital (outpatient) that dispenses medications to patients for self-administration under the supervision o…
    332B00000XDurable Medical Equipment & Medical SuppliesA supplier of medical equipment such as respirators, wheelchairs, home dialysis systems, or monitoring systems, that are prescribed by a physician for…
    156F00000XTechnician/TechnologistA broad category grouping different kinds of technologists and technicians. See individual definitions.
    146N00000XBasic Emergency Medical TechnicianA Basic EMT is an individual trained and certified to perform basic life support treatment in medical emergencies based on individual state boards.
    163WP0200XPediatric Registered NurseNursing Service Providers · Registered Nurse

    Related ICD-10-CM Codes

    27 rows

    ICD-10-CM CodeDescription
    E11.621Type 2 diabetes mellitus with foot ulcer
    E11.65Type 2 diabetes mellitus with hyperglycemia
    I80.9Phlebitis and thrombophlebitis of unspecified site
    I82.401Acute embolism and thrombosis of unspecified deep veins of right lower extremity
    I83.009Varicose veins of unspecified lower extremity with ulcer of unspecified site
    I83.10Varicose veins of unspecified lower extremity with inflammation
    I83.219Varicose veins of right lower extremity with both ulcer of unspecified site and inflammation
    I87.1Compression of vein
    I87.2Venous insufficiency (chronic) (peripheral)
    I96Gangrene, not elsewhere classified

    Showing 1–10 of 27

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    5 rows

    PolicyPayerEffective Date
    Salivary Hormone TestingOscar Health2026-10-01
    Bone Turnover Markers TestingOscar Health2026-10-01
    Parathyroid Hormone, Phosphorus, Calcium, and Magnesium TestingOscar Health2026-10-01
    Testosterone — Coverage Criteria for Measurement and MonitoringOscar Health2026-10-01
    Thyroid Disease 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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