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    v1.0.31
    OpenPayerBilling CodesProsthetic ProceduresHCPCS hcpcs-l5704-custom-below-knee-protective-cover
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    HCPCS L5704: Custom Shaped Protective Cover, Below Knee

    HCPCS Level II code L5704 describes a custom-shaped protective cover for the lower leg (below knee), intended as a patient-specific orthotic/covering used to protect a limb or prosthetic below the knee; service type: custom protective cover fabrication/fit; typical site of service: outpatient orthotics/prosthetics clinic or durable medical equipment supplier fitting area.

    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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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A patient presents to an outpatient prosthetics/orthotics clinic following transtibial (below-knee) amputation with a healed residual limb. The prosthetist evaluates the residual limb shape, soft-tissue contours, and activity level and determines a custom-shaped protective cover is required to protect the limb and prosthetic interface during ambulation and activities of daily living. The clinic documents the medical necessity, obtains any required orthotic/prosthetic prior authorization from payors (for example: Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, Medicare), and fabricates a custom below-knee protective cover described by billing code L5704. Typical workflow: initial prosthetic evaluation, measurement and casting or digital scanning of the residual limb, ordering and fabrication of the custom protective cover, fitting and adjustments in clinic, and follow-up visits to assess fit, skin integrity, and function. Common settings for this service are an outpatient prosthetics/orthotics clinic, a hospital-based prosthetic department, or a specialized rehabilitation facility. The typical patient is ambulatory or preparing for ambulation with a prosthesis and requires a patient-specific cover to reduce pressure, shear, or friction at the prosthetic interface and to protect fragile skin or scars on the below-knee residual limb.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97760Orthotic management and training, initial encounter, fitting and training with use of assistive technology (includes assessment, fitting, and training)Performed alongside L5704 for patient education, gait training, and device use instruction.
    97763Orthotic/prosthetic training, subsequent encounterUsed at follow-up visits to document ongoing training and adjustments after issuance of the custom cover.
    99070Supplies and materials (except spectacles) provided by the physician over and above those usually included with the office visit or other services rendered (list drugs, supplies, materials)May be used to bill non-covered ancillary supplies related to fabrication or fitting when allowed by payer.
    99203Office or other outpatient visit for the evaluation and management of a new patient, low to moderate severityTypical E/M visit code for the initial prosthetic evaluation prior to ordering L5704.
    99213Office or other outpatient visit for the evaluation and management of an established patient, moderate severityUsed for routine follow-up visits to assess fit and skin integrity after delivery of the custom protective cover.

    Related Modifiers

    8 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…
    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…
    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…
    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…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    332B00000X
    363A00000X
    2472R0900X
    207LC0200X
    376K00000X
    167G00000X
    152W00000X
    103T00000X

    Related ICD-10-CM Codes

    28 rows

    ICD-10-CM CodeDescription
    G57.51Tarsal tunnel syndrome, right lower limb
    I83.10Varicose veins of unspecified lower extremity with inflammation
    I83.11Varicose veins of right lower extremity with inflammation
    I83.90Asymptomatic varicose veins of unspecified lower extremity
    L97.409Non-pressure chronic ulcer of unspecified heel and midfoot with unspecified severity
    L97.419Non-pressure chronic ulcer of right heel and midfoot with unspecified severity
    L97.429Non-pressure chronic ulcer of left heel and midfoot with unspecified severity
    L97.509Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity
    L97.519Non-pressure chronic ulcer of other part of right foot with unspecified severity
    L97.529Non-pressure chronic ulcer of other part of left foot with unspecified severity

    Showing 1–10 of 28

    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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