HCPCS L6642: Upper Extremity Addition, Excursion Amplifier, Lever Type - OpenPayer

Summary & Overview

HCPCS L6642: Upper Extremity Addition, Excursion Amplifier, Lever Type

HCPCS Level II code L6642 denotes an upper extremity addition: an excursion amplifier of the lever type used as a prosthetic/orthotic component to enhance limb motion. This component is relevant nationally as part of durable medical equipment (DME) and prosthetics services, influencing device coverage, supplier billing practices, and patient access to functional assistive technology. Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical role and service context, typical sites of service, and the payer landscape applicable to coverage and billing considerations. The publication also summarizes benchmarks and policy updates where available, clarifies common billing modifiers and typical payer requirements, and situates L6642 within related prosthetic/orthotic coding practice. Data not available in the input will be noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareL6642HCPCS Level IIupper extremity prostheticexcursion amplifierdurable medical equipmentprostheticsorthoticsbilling

Billing Code Overview

HCPCS Level II code L6642 describes an upper extremity addition, excursion amplifier, lever type. This code represents a mechanical prosthetic or orthotic component designed to augment upper limb function by amplifying excursion through a lever mechanism.

Service type: Prosthetic/orthotic component fitting and supply
Typical site of service: Durable medical equipment suppliers, prosthetics/orthotics clinics, outpatient rehabilitation settings

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult with significant upper limb weakness or limited active elbow/wrist/hand function following nerve injury, brachial plexus injury, stroke with chronic hemiparesis, or severe peripheral nerve lesion. The patient presents to an orthotics and prosthetics clinic after evaluation by a physiatrist or orthopedic surgeon seeking mechanical assistance to amplify minimal residual excursion into useful distal function. The clinical workflow includes: initial evaluation by a referring clinician with documentation of functional deficits and prior conservative therapy; orthotist assessment including range of motion, residual muscle excursion, and voluntary activation; measurement and fitting of an upper extremity addition, excursion amplifier, lever type (L6642); fabrication and adjustment; device training and occupational therapy for activities of daily living; and periodic follow-up visits for adjustment, repair, or replacement.

Coding Specifications

Modifier	Description	When to Use
`11`	Provider performed the service	Use when coding reflects the primary provider's usual services (facility billing contexts).
`22`

HCPCS L5600: Preparatory Prosthesis for Hip Disarticulation/Hemipelvectomy

HCPCS-L6028-PARTIAL-HAND-FINGER-THUMB-PROSTHESIS-METACARPAL-LEVEL

HCPCS L6028: Partial Hand/Finger/Thumb Prosthesis, Metacarpal Level

HCPCS-L6400-BELOW-ELBOW-MOLDED-SOCKET-ENDOSKELETAL

HCPCS L6400: Below-Elbow Molded Socket, Endoskeletal System

HCPCS-L5595-HIP-DISARTICULATION-HEMIPELVECTOMY-PREPARATORY-PYLON-SACH-FOOT

HCPCS L5595: Preparatory Pylon for Hip Disarticulation/Hemipelvectomy

HCPCS-L8692-AUDITORY-OSSEOINTEGRATED-EXTERNAL-SOUND-PROCESSOR-BODY-WORN

HCPCS L8692: Auditory Osseointegrated External Sound Processor

HCPCS-L5649-LOWER-EXTREMITY-ISCHIAL-CONTAINMENT-NARROW-ML-SOCKET

HCPCS L5649: Addition to Lower Extremity Ischial Containment/Narrow M-L Socket

HCPCS-L5724-EXOSKELETAL-KNEE-SHIN-FLUID-SWING-PHASE-CONTROL

HCPCS L5724: Exoskeletal Knee-Shin System with Fluid Swing Phase Control

HCPCS-L6965-SHOULDER-DISARTICULATION-MYOELECTRIC-PROSTHESIS

HCPCS L6965: Shoulder Disarticulation Myoelectric Prosthesis

HCPCS-L5634-LOWER-EXTREMITY-SYMES-POSTERIOR-CANADIAN-SOCKET

HCPCS L5634: Lower Extremity Symes-Type Posterior Opening (Canadian) Socket

HCPCS-L6030-UPPER-EXTREMITY-PARTIAL-HAND-EXTERNAL-FRAME

HCPCS L6030: Upper Extremity Partial-Hand External Frame

Showing 1–10 of 472

Taxonomy Code	Specialty	Notes
`261QM0800X`	Physical Medicine & Rehabilitation	Physiatrists evaluate functional need and coordinate device prescription.
`231H00000X`	Orthotic & Prosthetic Services	Certified orthotists fabricate and fit the excursion amplifier.
`207L00000X`	Orthopedic Surgery	Orthopedic surgeons manage underlying structural or surgical issues that necessitate the device.
`2080P0207X`	Occupational Therapy	Occupational therapists train the patient in device use and ADL integration.
`363A00000X`	Physical Therapy	Physical therapists perform muscle re-education and strength/excursion assessment.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`G54.0`	Brachial plexus lesions	Devices like an excursion amplifier assist patients with plexus injuries who retain limited proximal excursion.
`S14.10XA`	Injury of nerves at neck level, initial encounter	Nerve injuries resulting in upper extremity weakness may require mechanical excursion amplification.
`G83.4`	Monoplegia of upper limb	Patients with monoplegia can use an excursion amplifier to convert small proximal movements into distal function.
`I69.391`	Sequelae of cerebral infarction affecting right dominant side	Post-stroke patients with persistent upper extremity impairment benefit from assistive orthoses.
`M62.81`	Muscle weakness (generalized)	Localized muscle weakness impacting grasp or elbow extension may warrant an amplifier device.
`T79.A11A`	Traumatic amputation of right upper limb, initial encounter	When residual limb has minimal excursion, an addition/excursion amplifier can aid function.
`G56.0`	Carpal tunnel syndrome	Severe neuropathy with motor involvement and persistent weakness may be an indication for assistive devices.
`M24.2`	Disorder of ligament	Chronic instability leading to functional loss may be temporarily aided by mechanical amplifiers.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97760`	Orthotic management and training, upper extremity, initial fitting and education	Commonly performed by therapists at the time of device delivery for training and functional integration.
`97763`	Orthotic/prosthetic management and training, upper extremity, subsequent	Used for follow-up training sessions and device adjustments after initial fitting.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, low to moderate complexity	Typical physician visit for evaluation and documentation of medical necessity prior to device provision.
`97001`	Physical therapy evaluation	Initial therapy evaluation to document functional deficits and guide orthotic prescription.
`99070`	Supplies and materials provided by the physician over and above those usually included with the office visit	Used when additional non-covered supplies or custom components for the amplifier are provided and billed separately.

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