HCPCS K1014: Endoskeletal Knee-Shin System with Fluid Swing/Stance Control - OpenPayer

Summary & Overview

HCPCS K1014: Endoskeletal Knee-Shin System with Fluid Swing/Stance Control

HCPCS Level II code K1014 denotes an addition for an endoskeletal knee-shin system featuring a 4-bar linkage or multiaxial design with fluid-controlled swing and stance phase modulation. This component represents an advanced orthotic solution for patients who need dynamic knee control to improve gait stability and function. Nationally, the code matters because it identifies higher-complexity orthotic components that can affect coverage decisions, supplier billing practices, and clinical device selection.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code's clinical application and service setting, plus payor coverage considerations and common modifiers used in claims processing. The publication outlines expected benchmarks for utilization and coding practices, summarizes relevant policy updates affecting orthotic component reimbursement, and provides clinical context to aid coding accuracy and documentation.

This summary is intended for a national audience of clinicians, durable medical equipment suppliers, and coding professionals seeking clear information on code purpose, typical site of service, and payer coverage patterns. Data not available in the input is indicated where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareK1014HCPCS Level IIorthoticsknee-shin systemdurable medical equipmentgait control4-bar linkagemultiaxial jointfluid swing stance

Billing Code Overview

HCPCS Level II code K1014 describes an addition for an endoskeletal knee-shin orthotic system that uses a 4-bar linkage or multiaxial mechanism with fluid swing and stance phase control. This component is used to provide advanced mechanical control of knee and lower leg motion for patients requiring durable medical equipment for ambulation support.

Service Type: Orthotic component for lower extremity (knee-ankle-foot orthosis addition)

Typical Site of Service: Outpatient durable medical equipment fitting and provision, including orthotics clinics and durable medical equipment suppliers providing patient fittings and follow-up adjustments.

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.

Coding Specifications

Modifier	Description	When to Use

HCPCS K1031: Non-Pneumatic Compression Controller without Calibrated Gradient Pressure

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

HCPCS K1010: Indwelling Intraurethral Drainage Device, Replacement Only

HCPCS-K1020-NONINVASIVE-VAGUS-NERVE-STIMULATOR

HCPCS K1020: Non-invasive Vagus Nerve Stimulator

HCPCS-K1033-NON-PNEUMATIC-SEQUENTIAL-COMPRESSION-HALF-LEG

HCPCS Level II K1033: Non-pneumatic Sequential Compression Garment, Half Leg

HCPCS-K1016-TRIGEMINAL-NERVE-TRANSCUTANEOUS-STIMULATION

HCPCS K1016: Transcutaneous Trigeminal Nerve Stimulator

HCPCS-K1009-SPEECH-VOLUME-MODULATION-SYSTEM

HCPCS K1009: Speech Volume Modulation System, All Components and Accessories

HCPCS-K1037-DOCKING-STATION-ORAL-APPLIANCE-UPPER-AIRWAY

HCPCS K1037: Docking Station for Oral Appliance to Reduce Upper Airway Collapsibility

HCPCS-K1017-MONTHLY-SUPPLIES-DURABLE-MEDICAL-EQUIPMENT

HCPCS K1017: Monthly Supplies for Durable Medical Device Use

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

HCPCS K1005: Disposable Breast Milk Collection and Storage Bag

HCPCS-K1036-ULTRASONIC-DIATHERMY-SUPPLIES-MONTHLY

HCPCS K1036: Low-Frequency Ultrasonic Diathermy Supplies, Monthly

Showing 1–10 of 32

Taxonomy Code	Specialty	Notes
`261QM0800X`	Orthotist/Prosthetist	Primary provider who fabricates, fits, and adjusts the endoskeletal knee-shin system.
`2088P0800X`	Physical Medicine & Rehabilitation Physicians	Physiatrist often manages functional assessment, prescription, and follow-up.
`2080P0202X`	Orthopaedic Surgeon	Performs amputations and may be involved in complex alignment or revision decisions.
`222100000X`	Physical Therapist	Provides gait training and functional rehabilitation after fitting.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z44.3`	Encounter for fitting and adjustment of lower limb prosthesis	Directly relevant for billing and documentation when adding an endoskeletal knee-shin system.
`Z89.611`	Acquired absence of right leg above knee	Common amputation-level diagnosis indicating need for a knee-shin prosthetic component.
`Z89.612`	Acquired absence of left leg above knee	Same relevance for left-sided above-knee amputees needing a multiaxial knee-shin system.
`S78.011A`	Complete traumatic amputation of right thigh, initial encounter	Traumatic etiology that results in above-knee amputation and subsequent prosthetic needs.
`M21.671`	Contracture, right knee	Knee contracture can affect component selection and alignment, motivating a fluid control knee addition.
`G81.10`	Hemiplegia, unspecified affecting right dominant side	Neurologic weakness resulting in gait abnormalities where advanced prosthetic control may assist function.
`M25.561`	Pain in right knee	Persistent knee-region pain in residual limb or contralateral limb may influence prosthetic selection and settings.

Related CPT Codes

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

OpenPayer