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    v1.0.28
    OpenPayerBilling CodesProsthetic ProceduresHCPCS hcpcs-l8320-truss-water-pad-addition
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    HCPCS L8320: Truss Addition — Water Pad

    HCPCS Level II code L8320 describes an addition to a standard truss pad specifically for a water pad accessory used with hernia support trusses; the service is classified as durable medical equipment and the typical site of service is outpatient, durable medical equipment suppliers, or home use where a patient adds a water pad to an existing truss for comfort or support.

    For related coverage guidance, see recent payer policy updates: Clinical Review Criteria — Lymphedema Therapy and Training (Complete Decongestive Therapy; LVA), Therapy Services — Electric Stimulation for Pain, Swelling and Function in a Clinic Setting, Site of Care: Outpatient Hospital Setting for Physical and Occupational Therapy.

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    Clinical & Coding Specifications

    Clinical Context

    A 68-year-old male with a longstanding inguinal hernia that is reducible but causes intermittent discomfort presents to a durable medical equipment (DME) clinic after surgical consultation declines immediate repair due to medical comorbidities (congestive heart failure and COPD). The patient is fitted for a hernia truss system; the provider prescribes a truss with an additional water pad component to provide targeted pressure and cushioning over the hernia site. The clinical workflow includes a DME evaluation (history, inspection of the hernia, measurement for fit), selection of the appropriate truss and water pad (L8320 as the HCPCS Level II code for the truss addition water pad), fabrication or stocking, patient instruction on application, and follow-up to assess fit, skin integrity, and symptom control. Routine communication may occur with the referring surgeon, primary care physician, and payor for prior authorization or coverage determination.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99203Office or other outpatient visit for the evaluation and management of a new patient, moderate complexityInitial outpatient evaluation documenting need for a hernia truss and water pad prior to DME ordering.
    99213Office or other outpatient visit for the evaluation and management of an established patient, low to moderate complexityFollow-up visit to assess fit, skin status, and symptom control after supplying the truss and water pad.
    11055Paring or cutting of benign hyperkeratotic lesion (e.g., callus) up to 3 lesionsOccasionally billed if skin care procedures are performed at the contact site prior to fitting to prevent pressure injury.
    99070Supplies and materials (except spectacles), provided by the physician over and above those usually included with the office visit or procedureUsed if additional small supplies related to fitting the water pad are provided by the clinic.
    97530Therapeutic activities, direct (one-on-one) patient contact by the provider (use of functional activities)Used when occupational/physical therapy provides training in application and safe use of the truss system.

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    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…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    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…
    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…
    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…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    333600000XPharmacyA facility used by pharmacists for the compounding and dispensing of medicinal preparations and other associated professional and administrative servi…
    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…
    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…
    363L00000XNurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision mak…
    133VN1401XPediatric Critical Care Nutrition Registered DietitianAn individual who is a Board Certified Specialist in Pediatric Critical Care Nutrition and applies evidence-based nutrition knowledge in providing med…
    174H00000XHealth EducatorHealth educators work in a variety of settings providing education to individuals or groups of individuals on healthy behaviors, wellness, and health-…
    364SX0200XOncology Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers · Clinical Nurse Specialist
    251X00000XSupports Brokerage AgencyA provider of service/function that assists participating individuals to make informed decisions about what will work best for them is consistent with…

    Related Payer Policy Updates

    Specialty: Physical Medicine, Rehab & Therapies1 / 2

    3 rows

    PolicyPayerEffective Date
    Clinical Review Criteria — Lymphedema Therapy and Training (Complete Decongestive Therapy; LVA)Kaiser Permanente2026-09-01
    Therapy Services — Electric Stimulation for Pain, Swelling and Function in a Clinic SettingCigna2026-08-15
    Site of Care: Outpatient Hospital Setting for Physical and Occupational TherapyCigna2026-08-15

    Related Codes

    HCPCS-L5000-PARTIAL-FOOT-SHOE-INSERT-LONGITUDINAL-ARCH-TOE-FILLER

    HCPCS Level II L5000: Partial Foot Shoe Insert with Longitudinal Arch, Toe Filler

    HCPCS-L5010-PARTIAL-FOOT-MOLDED-SOCKET-ANKLE-HEIGHT-TOE-FILLER

    HCPCS L5010: Partial Foot Molded Socket, Ankle Height, With Toe Filler

    HCPCS-L5020-PARTIAL-FOOT-MOLDED-SOCKET-TIBIAL-TUBERCLE-TOE-FILLER

    HCPCS L5020: Partial Foot Molded Socket with Toe Filler

    HCPCS-L5050-ANKLE-SYMES-MOLDED-SOCKET-SACH-FOOT

    HCPCS L5050: Ankle/Symes Molded Socket with SACH Foot

    HCPCS-L5060-ANKLE-SYMES-METAL-FRAME-MOLDED-LEATHER-SOCKET-ARTICULATED-ANKLE-FOOT

    HCPCS L5060: Ankle/Symes Metal Frame with Molded Leather Socket

    HCPCS-L5100-BELOW-KNEE-MOLDED-SOCKET-SHIN-SACH-FOOT

    HCPCS Level II L5100: Below-Knee Molded Socket with Shin and SACH Foot

    HCPCS-L5105-BELOW-KNEE-PLASTIC-SOCKET-SACH-FOOT

    HCPCS L5105: Below-Knee Plastic Socket Prosthesis with SACH Foot

    HCPCS-L5150-KNEE-DISARTICULATION-MOLDED-SOCKET-EXTERNAL-KNEE-SACH-FOOT

    HCPCS L5150: Knee Disarticulation Molded Socket with External Knee and SACH Foot

    HCPCS-L5160-KNEE-DISARTICULATION-MOLDED-SOCKET-BENT-KNEE-SACH-FOOT

    HCPCS Level II L5160: Knee Disarticulation Molded Socket, Bent Knee Configuration

    HCPCS-L5200-ABOVE-KNEE-MOLDED-SOCKET-SINGLE-AXIS-KNEE-SACH-FOOT

    HCPCS Level II L5200: Above-knee Prosthesis with Molded Socket and Single-axis Knee

    Showing 1–10 of 472

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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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