CurrentCapital BluecrossPolicy MP 6.052

Upper Limb Prostheses

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This policy governs medical necessity and coverage criteria for upper limb prosthetic devices and related components for members with upper limb amputation or absence, including preparatory, passive, body-powered, and myoelectric prostheses. It applies to Capital Bluecross-administered programs unless noted otherwise.

Policy Summary

PayerCapital Bluecross

PolicyUpper Limb Prostheses

Policy CodePolicy MP 6.052

Change TypeAdministrative (no material clinical changes)

Effective DateApr 1, 2026

Last ReviewMar 16, 2026

Next Review Date

Key ActionObtain and document a certified prosthetist's determination of medical necessity and required clinical information (including microvolt threshold and functional evaluation for myoelectric devices) when requesting coverage.

SourceLink

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CurrentCapital BluecrossPolicy MP 6.052

Upper Limb Prostheses

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Policy Summary

PayerCapital Bluecross

PolicyUpper Limb Prostheses

Policy CodePolicy MP 6.052

Change TypeAdministrative (no material clinical changes)

Effective DateApr 1, 2026

Last ReviewMar 16, 2026

Next Review Date

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

5prosthesis life (yrs)

≤2test sockets allowed

investigationalindividually powered digits

certified prosthetistbody-powered requirement

3prosthesis categories

multipleHCPCS L-codes listed

Coverage Criteria for Upper Limb Prostheses

Preparatory Prosthesis

Covered when ALL of the following are met

Preparatory prosthesis necessity: A preparatory prosthesis may be considered medically necessary after surgery to prevent edema of the residual limb.

Additions are investigational for preparatory prosthesis; all other uses are considered investigational due to insufficient evidence.

Passive Functional Prosthesis

Covered when ALL of the following are met

Passive prosthesis ADL requirement: A passive functional prosthesis may be considered medically necessary only when there is clear documentation that the requested prosthesis is required to perform activities of daily living (ADLs).

Passive functional prostheses do not include mechanical working parts; all other uses are investigational due to insufficient evidence.

Body-Powered Prostheses

Covered when ALL of the following are met

Body-powered criteria: The member has a history of upper limb amputation or absence of upper limb(s); and a certified prosthetist determines a body-powered upper extremity prosthesis is appropriate to meet the member's functional needs.

A body-powered prosthesis consists of socket/interface, suspension, harness, wrist unit, terminal device, and may include additional components depending on level of amputation.

Electric/Myoelectric Prostheses

Covered when ALL of the following are met

Myoelectric criteria: The individual has an amputation or missing limb at the wrist or above; and standard body-powered prosthetic devices cannot be used or are insufficient to meet the individual's functional needs in performing ADLs; and the remaining musculature contains the minimum microvolt threshold to operate a myoelectric device; and the individual has demonstrated neurological and cognitive function to operate the prosthesis effectively; and the individual is free of comorbidities that could interfere with prosthesis function; and functional evaluation indicates that with training a myoelectric prosthesis is likely to meet the individual's functional needs (gripping, releasing, holding, coordinating movement) when performing ADLs.

Evaluation should consider control needs, durability/maintenance, function (speed, work capability), and usability.

Individually Powered Digits

Individually powered digits: A prosthesis with individually powered digits, including but not limited to a partial hand prosthesis, is considered investigational.

Insufficient peer-reviewed evidence to support health outcomes or benefits.

Sockets and Suspension Systems

Test sockets limit: No more than two test (diagnostic) sockets may be considered medically necessary for an individual prosthesis without additional documentation of medical necessity.

No more than two of the same socket inserts are allowed at the same time.

Socket replacement: Socket and socket insert replacements may be considered medically necessary if there is documentation of functional and/or physiological need (e.g., changes in residual limb, functional need changes, irreparable damage due to wear and tear, wear due to excessive weight, or prosthetic demands of a very active amputee).

Documentation must support medical necessity.

Terminal Devices

Terminal devices for ADLs and work: Terminal devices may be considered medically necessary for work and when essential to activities of daily living (ADLs).

Terminal devices used solely for sports or recreation are considered investigational.

Accessories, Adjustments, Repairs, Replacement

Accessories (sheaths, socks, hinges, switches, extensions, adaptors, cables for residual limbs, etc.) may be considered medically necessary when they aid in or are essential to the effective use of the prosthetic limb.

Additions should be billed on the same claim as the base procedure when supplied at the same time.

Adjustments and/or modifications to the prosthesis required by wear and tear or due to a change in the individual's condition (such as growth in a child) or to improve function may be considered medically necessary.

Repairs necessary to make the prosthetic functional may be considered medically necessary.

Repair expense may not exceed the estimated expense of purchasing another prosthesis.

Replacement prosthesis may be considered medically necessary only if the previous prosthesis is no longer functional.

Requests for upgrades or newer technology will be reviewed for medical necessity; typical prosthesis life is approximately 5 years.

Coverage stance for myoelectric components (wrist or above)

Covered when medical necessity criteria are met:

Prosthesis selection logic: Myoelectric components may be considered for persons with an amputation at the wrist or above when passive or body-powered prostheses cannot be used or are insufficient to meet the functional needs of the patient in activities of daily living.

Reflects evidence that myoelectric prostheses offer appearance advantages and similar function to body-powered devices for light work; considered sufficient for wrist-or-higher amputations.

Investigational / Insufficient Evidence

Not enough evidence / investigational when:

Advanced sensor-controlled and digit-powered prostheses: Sensor- and myoelectric-controlled advanced prostheses (current generation) have insufficient evidence to determine consistent improvements in function and quality of life; individually powered digits distal to the wrist lack peer-reviewed publications.

Evidence for prototypes and small studies is mixed or insufficient to conclude net health outcome improvement.

All other uses of preparatory prostheses, passive functional prostheses, and myoelectric upper-limb prosthetic components under conditions not explicitly described in this policy are considered investigational due to insufficient evidence to support improved health outcomes or benefits. Preparatory prostheses are limited to post‑surgical use to prevent residual‑limb edema; additions to preparatory devices are classified as investigational because initial preparatory fittings include the necessary components. Passive functional prostheses may be considered medically necessary only when clear documentation demonstrates they are required to perform activities of daily living; uses outside that circumstance are investigational. Myoelectric components that do not meet the explicit coverage criteria are investigational as described elsewhere in the policy.

Items that the policy text explicitly identifies as investigational or having insufficient evidence are not supported by peer‑reviewed evidence demonstrating improved health outcomes or benefits. Such items may be excluded from coverage or denied on that basis; providers should not expect routine reimbursement for items labeled investigational in this policy.

Items designated investigational in this policy are excluded from coverage because the available evidence is insufficient to conclude they improve net health outcomes. When a specific device, procedure code, or component is listed as investigational, requests for coverage will be evaluated against this exclusion and may be denied.

Myoelectric upper‑limb prosthetic components remain investigational under any conditions that do not meet the policy's explicit coverage criteria. The policy restricts coverage of myoelectric components to situations where the individual has an amputation at the wrist or above and where passive or body‑powered devices cannot be used or are insufficient to meet activities of daily living; any other use of myoelectric components is considered investigational because evidence is lacking to support benefit.

Use of myoelectric‑powered orthoses for upper‑extremity weakness or paresis is considered investigational / insufficient. Available studies are small and show inconsistent performance without clear training protocols; the evidence does not demonstrate consistent improvements in functional outcomes or quality of life and is therefore inadequate to support routine coverage for this indication.

Specific HCPCS‑coded items identified in the policy as investigational (for example codes noted in the investigational code group) are considered not medically necessary because there is insufficient evidence to support their use. Providers should reference the coding section of this policy to identify codes flagged as investigational when requesting coverage or submitting claims.

HCPCS and Coding Guidance

Covered HCPCS L-CodesHCPCSCovered

L6000	Covered when medically necessary
L6028	Covered when medically necessary
L6029	Covered when medically necessary
L6030	Covered when medically necessary
L6031	Covered when medically necessary
L6032	Covered when medically necessary
L6033	Covered when medically necessary
L6037	Covered when medically necessary
L6050	Covered when medically necessary
L6055	Covered when medically necessary

1–10 of 152

1/16

Investigational / insufficient evidence codesHCPCSExperimental

L6034	Investigational (insufficient evidence)
L6026	Investigational / mapping noted (L6026 = L6715)

Recently added/ referenced HCPCS codesHCPCS

L6034	HCPCS code referenced in policy text (specific descriptor not provided in this excerpt)
L6036	HCPCS code referenced in policy text (specific descriptor not provided in this excerpt)
L6038	HCPCS code referenced in policy text (specific descriptor not provided in this excerpt)
L6039	HCPCS code referenced in policy text (specific descriptor not provided in this excerpt)

Investigational code pairingsHCPCSExperimental

L6026	HCPCS code listed alongside L6715; context implies investigational
L6715	HCPCS code listed alongside L6026; context implies investigational pairing

Provider Responsibilities, Prior Authorization, and Billing Rules

Billing Rule

Bill additions with base procedure; verify program-specific prior auth

Bill accessory items (sheaths, socks, hinges, switches, extensions, adaptors, cables, etc.) on the same claim as the base procedure when they are supplied at the same time; prior authorization requirements may vary by program/product (see FEP note).

Additions and accessories should be billed with the base procedure on the same claim when furnished at the same time.
Prior authorization likely required per member benefit program or product variation; verify program-specific rules.

Prior Authorization

Prior authorization may be required for many HCPCS L-codes

A large set of HCPCS L-codes are designated "Covered when medically necessary"; furnishing these items may require prior authorization based on the member's benefit and medical necessity determination.

Background and Rationale

Upper‑limb amputations arise from trauma, surgical resection, or congenital absence. The primary goals of prosthetic treatment are restoration of function and appearance while optimizing comfort and ease of use; prosthesis complexity and functional requirements increase with more proximal (higher) levels of amputation. Prostheses are commonly categorized as passive, body‑powered, or myoelectric, and selection aims to balance functional need, durability, usability, and patient preference.

Definitions and Device Descriptions

Passive functional prosthesis — definition and characteristics

DefinitionA prosthesis without mechanical working parts that relies on manual repositioning (typically using the opposite arm) and cannot restore active function.

Typical advantagesLightest of the prosthetic types and generally the most comfortable.

Medical necessity conditionMay be considered medically necessary only when clear documentation shows it is required to perform activities of daily living (ADLs).

Coverage limitationAll other uses are considered investigational due to insufficient evidence to support health outcomes or benefits.

Body-powered prosthesis — definition and components

Core componentsConsists of a socket or interface, suspension system, harness, wrist unit, terminal device (e.g., hook or hand), and may include triceps cuff, hinges, elbow, or shoulder components depending on level of amputation.

Policy Summary

PayerCapital Bluecross

PolicyUpper Limb Prostheses

Policy CodePolicy MP 6.052

Change TypeAdministrative (no material clinical changes)

Effective DateApr 1, 2026

Last ReviewMar 16, 2026

Next Review Date

SourceLink

On This Page

Refer to the policy's comprehensive HCPCS L-code lists for codes described as covered when medically necessary before submitting a prior authorization request.
Coverage is contingent on member benefit terms and medical necessity.

Prior Authorization

Confirm code-specific prior authorization and coverage

Verify current coverage and prior authorization requirements for specific HCPCS codes before furnishing or billing devices — codes have been added and removed in administrative updates.

Policy history records administrative code additions and removals (e.g., L6028–L6039 additions and later removals noted).
Confirm code-specific prior authorization and coverage with the payer at time of service.

Step Therapy

Try/consider body-powered devices before myoelectric

Consider standard body-powered prostheses before myoelectric devices; myoelectric components are considered when body-powered devices cannot be used or are insufficient to meet ADL functional needs.

Document that standard body-powered devices were tried or are not suitable before requesting myoelectric components.
Myoelectric consideration applies primarily for amputations at the wrist or above when functional needs for ADLs are unmet by body-powered options.

Prior Authorization

Request myoelectric only when passive/body-powered are insufficient

Only request myoelectric components when passive or body-powered prostheses cannot be used or are insufficient to meet the patient's functional needs for activities of daily living.

Documentation should demonstrate insufficiency or unsuitability of passive/body-powered devices to support myoelectric coverage.
Myoelectric devices require evaluation of musculature microvolt thresholds, cognitive/neurological function, absence of interfering comorbidities, and functional evaluation indicating likely benefit.

Documentation Required

Document medical necessity for socket and socket insert replacements

For socket or socket insert replacements, provide documentation that supports medical necessity — examples include changes in the residual limb, changes in functional need, irreparable damage from wear and tear, wear due to excessive weight, or high prosthetic demands of a very active amputee.

Explain physiological or functional need (e.g., residual limb volume change) when requesting socket replacements.
Limit of no more than two test (diagnostic) sockets without additional documentation applies.

Documentation Required

Provide prosthesis-specific clinical documentation (include prosthetist assessment)

Include a history of the upper-limb amputation or absence and a certified prosthetist's determination that the selected body-powered or myoelectric prosthesis meets the member's functional needs; for myoelectric devices also document microvolt threshold, neurologic/cognitive function, absence of interfering comorbidities, and results of a functional evaluation.

Certified prosthetist assessment that prosthesis is appropriate to meet functional needs.
Myoelectric-specific documentation: residual musculature microvolt threshold, cognitive/neurological assessment, and functional evaluation indicating likely benefit with training.

Billing Rule

Verify member benefits, eligibility, and medical necessity for claims

Coverage and payment are governed by the member's benefit program terms, eligibility on the date of service, and a determination of medical necessity; coding lists may not be all-inclusive.

Final claim processing depends on the member's contract, benefit limitations, and exclusions.
Contact Provider Services or Member Services with questions about policy application for a specific member.

Billing Rule

Use current coding tables and policy history when billing

Reference the policy history and current coding tables when submitting claims; administrative updates have added and removed procedure codes over time.

Policy history documents code additions (e.g., L6028–L6039, L6700, L7406) and removals (e.g., L6010, L6020).
Use the current coding tables on the policy at time of billing to ensure accurate submission.

Denial Risk

Preparatory prostheses outside edema-prevention are investigational

Preparatory prostheses furnished for indications other than preventing postoperative residual limb edema are considered investigational and may be denied.

Additions to preparatory prostheses are investigational since preparatory devices include initial components.
All other uses lack sufficient evidence and are investigational.

Denial Risk

Individually powered digits (partial hand) are investigational

Prostheses with individually powered digits (including partial hand prostheses) are considered investigational due to insufficient evidence and may be denied.

No peer‑reviewed publications supporting individually powered digits distal to the wrist were identified.
Requests for such devices are likely to be denied as investigational.

Denial Risk

Investigational items may be denied — check code-level investigational listings

Items the policy designates as investigational (including specific HCPCS codes listed as investigational) may be denied coverage due to insufficient evidence supporting health outcomes or benefits.

Policy identifies L6034 and L6026 (mapping to L6715) as investigational in coding notes.
Verify whether a requested item is listed as investigational before initiating treatment to avoid denial risk.

Control mechanismUses a body harness and cable system driven by voluntary movement of the shoulder and/or stump to operate the terminal device.

Indication for coverageMay be considered medically necessary when the member has a history of upper limb amputation/absence and a certified prosthetist determines a body-powered device is appropriate to meet functional needs.

Trade-offs/limitationsProvides good grip strength and visual control but may cause harness discomfort, wire failure, and less natural appearance with some terminal attachments.

Myoelectric prosthesis — definition and required physiologic criteria

DefinitionAn electrically powered prosthesis that uses electromyographic (EMG) signals from remaining stump muscles, detected by surface electrodes, amplified and processed by a controller to drive battery-powered motors moving the hand, wrist, or elbow.

Required physiologic criteriaRemaining musculature must meet the minimum microvolt threshold to allow operation of the myoelectric device.

Functional and cognitive requirementsIndividual must demonstrate neurological and cognitive function to operate the prosthesis effectively and be free of comorbidities that could interfere (e.g., neuromuscular disease).

Evaluation requirementFunctional evaluation must indicate that with training, the myoelectric prosthesis is likely to meet the individual's ADL needs, considering control, durability, function, and usability.

Passive prosthesis — short definition

Short definitionA prosthesis that relies on manual repositioning and does not restore active function.

Common characteristicTypically the lightest and most comfortable of the prosthetic types.

Usage noteMay be appropriate when primarily needed for appearance or limited passive assistance rather than active function; medical necessity for ADLs must be documented for coverage.

Body-powered prosthesis (alternate entry) — description emphasizing harness/cable control

DescriptionA prosthesis that uses a harness and cable system, where voluntary movement of the shoulder/stump extends the cable to transmit force to the terminal device for manipulation.

Typical componentsIncludes harness, cables, wrist unit, terminal device (hook or hand), and may incorporate elbow or shoulder mechanisms depending on amputation level.

Clinical considerationsOffers good grip strength and visual control but may cause harness discomfort and have less natural appearance compared with some myoelectric options.

Myoelectric prosthesis (alternate entry) — electrically powered using EMG signals and controller

Primary descriptionAn electrically powered prosthesis using EMG signals detected from residual limb muscles, processed by a controller to drive motors that move prosthetic joints.

Control elementsUses surface electrodes to detect EMG signals, amplification and a controller to translate signals into motor-driven movement; myoelectric hand attachments are battery-powered.

Hybrid contextMyoelectric components can be combined with other mechanisms (e.g., switches, sensors) and can form part of hybrid systems for high-level amputations.

Hybrid system / LUKE (DEKA) Arm — description of hybrid and the LUKE/DEKA Arm

Hybrid definitionA system combining body-powered and myoelectric components, often used for high-level amputations to enable control of multiple joints and reduce weight/cost compared with fully myoelectric prostheses.

LUKE/DEKA Arm descriptionThe LUKE Arm (DEKA Arm System) is an advanced myoelectric prosthesis developed with DARPA support that enables multiple simultaneous powered movements and incorporates switches, movement and force sensors, inertial measurement sensors, and tactile feedback (vibration/pressure/grip sensors).

Clinical roleHybrid systems allow control of two joints concurrently (e.g., one body-powered and one myoelectric) and may be used for complex, high-level amputations.

DEKA Arm — advanced multifunction prosthesis evaluated in cited studies

Device overviewThe DEKA (LUKE) Arm is an advanced multifunction upper limb prosthesis evaluated in multiple studies assessing usability, retention, and outcomes.

Research summaryPublished studies include evaluations of satisfaction, retention/attrition, home-use trials, and comparisons to conventional prostheses (see cited references).

Development backgroundDeveloped by DEKA Research and DARPA collaboration to support complex tasks with multiple simultaneous powered movements and advanced sensor integration.

Myoelectric prosthesis — general definition and long-term/pediatric notes

General definitionA prosthetic device that uses electrical signals from residual limb muscles (EMG) to control powered components through a controller and motors for hand, wrist, and/or elbow movement.

Long-term and pediatric notesLong-term follow-up studies and reports of use in very young children are cited in the literature, indicating experience across age ranges but with noted limitations (cost, maintenance, weight).

Clinical trade-offsMyoelectric devices can offer more physiologically natural control but have higher cost, maintenance needs (e.g., gloves), and increased weight compared with body-powered options.