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    v1.0.28
    OpenPayerBilling CodesMedical And Surgical SuppliesHCPCS hcpcs-a6566-gradient-compression-garment-neck-head
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    HCPCS Level II A6566: Gradient Compression Garment, Neck/Head

    HCPCS Level II code A6566 describes a gradient compression garment for the neck/head, billed per garment, used to provide therapeutic compression for head and neck conditions; service type: medical supply/device for compression therapy; typical site of service: outpatient clinics, wound care centers, rehabilitation facilities, or home use when prescribed by a clinician.

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

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult or adolescent recovering from head and neck surgery, traumatic soft-tissue injury, or lymphedema management who requires a fitted gradient compression garment for the neck and head to reduce edema, support wound healing, and control postoperative swelling. The clinical workflow begins with a physician or certified lymphedema therapist assessing the patient in an outpatient clinic or hospital setting, documenting the indication (for example, postoperative edema after cervical lymph node dissection or facial trauma), and ordering a custom or off-the-shelf neck/head compression garment. A certified fitter measures the patient and records sizing and garment specifications. The supplier dispenses the garment, trains the patient or caregiver on proper donning, doffing, wear schedule, and skin checks, and documents medical necessity and supplier details for billing. Follow-up typically occurs in clinic or via telehealth to evaluate edema reduction, skin integrity, and garment fit, with adjustments or replacement orders as clinically indicated.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97162Physical therapy evaluation, moderate complexityPerformed prior to ordering a custom compression garment to document functional status and justify medical necessity.
    97140Manual therapy techniques (e.g., lymphatic drainage)Often performed in conjunction with compression garment fitting to reduce edema before final measurement.
    97112Neuromuscular re-educationMay be part of rehabilitation sessions preceding or following provision of a compression garment to restore neck/craniofacial function.
    99406Smoking and tobacco use cessation counseling intermediate, 3-10 minutesMay be documented in the broader care plan when counseling affects wound healing; included as an ancillary service in the care pathway.
    99070Supplies and materials (except spectacles) provided by physician over and above those usually included with the office visitUsed when additional non-standard supplies, fitting materials, or custom modifications are provided during the fitting visit.

    Related Modifiers

    7 rows

    ModifierDescriptionWhen to Use
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    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…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    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…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    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…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    231H00000XAudiologist(1) A specialist in evaluation, habilitation and rehabilitation of those whose communication disorders center in whole or in part in hearing function.…
    207R00000XInternal Medicine PhysicianA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults…
    2278P1006XPulmonary Function Technologist Certified Respiratory TherapistAn individual who is trained and qualified to perform pulmonary diagnostic tests. In the course of conducting these tests, the Pulmonary Function Tec…
    246ZA2600XMedical Art Specialist/TechnologistNone
    246QH0600XHistology Specialist/TechnologistTechnologists, Technicians & Other Technical Service Providers · Specialist/Technologist, Pathology
    2251P0200XPediatric Physical TherapistA licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Pediatric Physical Therapy, who has d…

    Related ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    C41.9Malignant neoplasm of bone and articular cartilage, unspecified
    F43.21Adjustment disorder with depressed mood
    G44.1Vascular headache, not elsewhere classified
    I83.90Asymptomatic varicose veins of unspecified lower extremity
    L03.119Cellulitis of unspecified part of limb
    L90.5Scar conditions and fibrosis of skin
    M25.511Pain in right shoulder
    M25.512Pain in left shoulder
    M54.12Radiculopathy, cervical region
    M54.13Radiculopathy, cervicothoracic region

    Showing 1–10 of 24

    Related Payer Policy Updates

    Specialty: Endocrinology1 / 3

    10 rows

    PolicyPayerEffective Date
    Salivary Hormone TestingOscar Health2026-10-01
    Parathyroid Hormone, Phosphorus, Calcium, and Magnesium TestingOscar Health2026-10-01
    Bone Turnover Markers TestingOscar Health2026-10-01
    Testosterone — Coverage Criteria for Measurement and MonitoringOscar Health2026-10-01
    Diabetes Mellitus Testing — Coverage CriteriaOscar Health2026-10-01
    Thyroid Disease TestingOscar Health2026-10-01
    Thyroid Disease Testingblue cross blue shield - louisiana2026-09-15
    Thyroid Disease TestingBlue Cross Blue Shield - New Mexico2026-09-04
    Parathyroid Hormone, Phosphorous, Calcium and Magnesium TestingBlue Cross Blue Shield - New Mexico2026-09-04
    Testosterone laboratory testing and managementPremera Bluecross2026-09-04

    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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