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    OpenPayerBilling CodesComponents, Accessories and SuppliesHCPCS hcpcs-k1014-endoskeletal-knee-shin-4-bar-fluid-control
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    HCPCS K1014: Endoskeletal Knee-Shin System, Multiaxial, Fluid Swing/Stance Control

    HCPCS Level II code K1014 describes an addition to an endoskeletal knee-shin orthotic system featuring a four-bar linkage or multiaxial design with fluid swing and stance phase control; this represents a lower-extremity prosthetic/orthotic component intended to provide dynamic gait control and stability during ambulation. The service type is prosthetic/orthotic component provision and adjustment, and the typical site of service is outpatient orthotics/prosthetics clinics or prosthetic fitting centers where devices are measured, fitted, and adjusted.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A middle-aged or older adult with an above-knee amputation or severe knee joint deficiency is evaluated for a prosthetic limb upgrade to improve gait stability and energy efficiency. The multidisciplinary prosthetics team (prosthetist, orthotist, physiatrist or orthopedic surgeon, and physical therapist) documents functional limitations such as instability during stance, poor swing-phase clearance, or excessive energy expenditure with the existing prosthesis. The clinician prescribes an endoskeletal knee-shin system with a 4-bar linkage or multiaxial mechanism and integrated fluid swing and stance phase control as an addition to an existing socket and pylon assembly. Pre-prosthetic assessment includes functional mobility testing, limb volume and skin inspection, and a gait analysis. The prosthetist orders the component (billed with K1014) and records justification: improved stance-phase stability, controlled swing-phase return, and alignment needs for higher-activity ambulation.

    On delivery day, the prosthetist fits and aligns the addition to the existing prosthesis, adjusts hydraulic settings, and trains the patient through functional transfers and gait drills. Documentation includes the K1014 device details, serial/manufacturer information, objective pre/post gait measures, patient-reported function, and time spent on fitting and training. Follow-up visits reassess alignment, adjust fluid damping, and evaluate skin integrity and function.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97760Orthotic management and training, initial encounter; for fitting and training related to prosthetic/orthotic deviceUsed for the initial training and patient education after fitting the K1014 addition.
    97763Orthotic/prosthetic check, established patient; re-evaluation of orthotic/prosthetic useUsed for follow-up checks and adjustments of the knee-shin addition during subsequent visits.
    97761Prosthetic training, lower limb, initial encounterUsed for gait training specifically focused on lower-limb prosthesis with the new fluid-controlled knee unit.
    99070Supplies and materials (eg, devices, equipment) billed by supplierMay be used by the supplier to bill non-covered supplies or additional components associated with fitting the K1014 device.
    99456Work related or medical disability examination services; medical legal evaluationUsed when functional capacity or work-related evaluations are performed to justify the need for advanced prosthetic components.

    Related Modifiers

    7 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…
    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…
    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 Code
    2080P0202X
    2279H0200X
    207QG0300X
    163WX1100X
    207YX0007X
    2084A0401X
    102X00000X
    106H00000X

    Related ICD-10-CM Codes

    22 rows

    ICD-10-CM CodeDescription
    G82.20Paraplegia, unspecified
    G82.21Paraplegia, complete
    M17.0Bilateral primary osteoarthritis of knee
    M17.11Unilateral primary osteoarthritis, right knee
    M17.12Unilateral primary osteoarthritis, left knee
    M17.9Osteoarthritis of knee, unspecified
    M23.92Unspecified internal derangement of left knee
    M24.271Disorder of ligament, right ankle
    M24.272Disorder of ligament, left ankle
    M25.561Pain in right knee

    Showing 1–10 of 22

    Related Codes

    HCPCS-K1004-LOW-FREQUENCY-ULTRASONIC-DIATHERMY-HOME-DEVICE

    HCPCS Level II K1004: Low-Frequency Ultrasonic Diathermy for Home Use

    HCPCS-K1005-DISPOSABLE-BREAST-MILK-COLLECTION-STORAGE-BAG

    HCPCS K1005: Disposable Breast Milk Collection and Storage Bag

    HCPCS-K1006-HOME-SUCTION-PUMP-URINE-MANAGEMENT

    HCPCS Level II K1006: Home Suction Pump for External Urine Management

    HCPCS-K1007-POWERED-BILATERAL-LOWER-EXTREMITY-ORTHOSIS

    HCPCS K1007: Bilateral Powered Hip/Knee/Ankle/Foot Device

    HCPCS-K1009-SPEECH-VOLUME-MODULATION-SYSTEM

    HCPCS K1009: Speech Volume Modulation System

    HCPCS-K1010-INDWELLING-INTRAURETHRAL-DRAINAGE-DEVICE-REPLACEMENT

    HCPCS K1010: Indwelling Intraurethral Drainage Device with Valve, Replacement Only

    HCPCS-K1011-ACTIVATION-DEVICE-INTRAURETHRAL-DRAINAGE-VALVE-REPLACEMENT

    HCPCS K1011: Activation Device for Intraurethral Drainage Valve, Replacement Only

    HCPCS-K1012-CHARGER-BASE-INTRAURETHRAL-ACTIVATION-DEVICE-REPLACEMENT

    HCPCS Level II K1012: Charger and Base Station for Intraurethral Activation Device, Replacement Only

    HCPCS-K1013-ENEMA-TUBE-REPLACEMENT

    HCPCS Level II K1013: Enema Tube, Replacement Only

    HCPCS-K1015-FOOT-ADDUCTUS-POSITIONING-DEVICE-ADJUSTABLE

    HCPCS K1015: Foot Adductus Positioning Device, Adjustable

    Showing 1–10 of 32

    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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