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    v1.0.31
    OpenPayerBilling CodesProsthetic ProceduresHCPCS hcpcs-l5781-lower-limb-prosthesis-vacuum-pump-moisture-evacuation
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    HCPCS Level II L5781: Lower Limb Prosthesis Vacuum Pump and Moisture Evacuation System

    HCPCS Level II code L5781 describes an addition to a lower limb prosthesis consisting of a vacuum pump and residual limb volume management and moisture evacuation system intended to improve socket fit and limb health; service type: prosthetic accessory/device addition; typical site of service: prosthetics clinic, orthotics/prosthetics supplier, or outpatient rehabilitation setting.

    For related coverage guidance, see recent payer policy updates: Speech Therapy for Autism Disorders - Medical Policy, Physical Performance Test or Measurement, Sensory Integration Therapy and Auditory Integration Training.

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    Clinical & Coding Specifications

    Clinical Context

    A 62-year-old male with a transtibial amputation from peripheral arterial disease presents to a prosthetics clinic for evaluation of poor socket fit and fluctuating residual limb volume with associated skin maceration. He has a definitive prosthetic socket and gait training completed; however, he reports daily swelling in the afternoon and moisture accumulation inside the socket that causes skin irritation and odor. The prosthetist assesses the socket interface and determines that a vacuum pump and moisture evacuation system will be added to the existing lower limb prosthesis to improve limb volume management, suspension, and skin environment.

    The clinical workflow includes: a prosthetic evaluation appointment, measurement and ordering of the vacuum pump add-on (L5781) as an addition to the existing prosthesis, coordination with the manufacturer/vendor for assembly and fitting, a delivery and fitting visit to integrate the vacuum and moisture system with the socket, patient education on use and maintenance, and follow-up visits to monitor limb volume stability, skin integrity, and function. Documentation includes the existing prosthesis identifier, the medical necessity supporting residual limb volume management, skin moisture issues, trial fitting notes, and device manufacturer details.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97760Orthotic management and training, initial encounter; fitting and training for prosthetic deviceMay be performed at delivery to train the patient on the vacuum pump system and gait training with the modified prosthesis
    97763Orthotic/prosthetic management and training, subsequent encounterUsed for follow-up training and adjustments after initial integration of the vacuum/moisture system
    99070Supplies and materials (except spectacles) provided by the physician over and above those usually included with the office visitMay be used when additional non-coded supplies are provided at fitting (check payer policies)
    96372Therapeutic, prophylactic, or diagnostic injectionData not available in the input.
    99213Established patient office visit, typically 15 minutesCommon for routine prosthetist or physiatry follow-up visits related to device performance and skin checks

    Related Modifiers

    5 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…
    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…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207L00000X
    207K00000X
    261QH0700X
    163WI0500X
    2471V0106X
    342000000X
    207P00000X
    225600000X

    Related Payer Policy Updates

    Specialty: Physical Medicine, Rehab & Therapies1 / 2

    10 rows

    PolicyPayerEffective Date
    Speech Therapy for Autism Disorders - Medical PolicyHealth-New-England2026-12-01
    Physical Performance Test or MeasurementCigna2026-11-15
    Sensory Integration Therapy and Auditory Integration TrainingColorado Rocky Mountain Health Plans2026-11-01
    Skilled Nursing and Skilled Rehabilitation Services (Outpatient)Anthem2026-10-01
    Habilitation and Rehabilitation Therapy (Occupational, Physical, and Speech) (for New Mexico Only)UnitedHealthcare2026-10-01
    Physical Therapy/Medicine Corporate Medical Policybcbsvermont2026-10-01
    Cognitive Rehabilitation Corporate Medical Policybcbsvermont2026-10-01
    Speech Language Pathology/Therapy Services Corporate Medical Policybcbsvermont2026-10-01
    Occupational Therapy Corporate Medical Policybcbsvermont2026-10-01
    Biomagnetic TherapyConnectiCare2026-09-11

    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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