CurrentAetnaPolicy 0680

Electrical Stimulation for Chronic Ulcers

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Defines Aetna's coverage and medical necessity criteria for electrical stimulation (transcutaneous electrical current applied near ulcers) as durable medical equipment for specified chronic ulcer types and lists experimental indications and coding guidance. Affects providers submitting DME and therapy claims to Aetna.

Policy Summary

PayerAetna

PolicyElectrical Stimulation for Chronic Ulcers

Policy CodePolicy 0680

Change TypeNo material change

Effective DateFeb 6, 2004

Last ReviewSep 15, 2023

Next Review DateJul 25, 2024

Key ActionDocument at least 30 days of conventional wound care without measurable healing and objective wound measurements when requesting coverage for electrical stimulation.

SourceLink

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CurrentAetnaPolicy 0680

Electrical Stimulation for Chronic Ulcers

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Policy Summary

PayerAetna

PolicyElectrical Stimulation for Chronic Ulcers

Policy CodePolicy 0680

Change TypeNo material change

Effective DateFeb 6, 2004

Last ReviewSep 15, 2023

Next Review DateJul 25, 2024

Key ActionDocument at least 30 days of conventional wound care without measurable healing and objective wound measurements when requesting coverage for electrical stimulation.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

30 daysConventional care prior to ES

4 weeksDemonstration period for continued ES

1 hour/dayMax daily duration

Stage III/IVPressure ulcer stages covered

G0281Representative HCPCS covered

Coverage criteria for electrical stimulation

Initial coverage criteria

Covered when ALL of the following are met:

Eligibility for covered ES: 1) Ulcer is one of: arterial ulcer OR diabetic ulcer OR Stage III or Stage IV pressure ulcer OR venous stasis (venous) ulcer; AND 2) Electrical stimulation is used as adjunctive therapy after there are no measurable signs of healing for at least 30 days of conventional wound treatments; AND 3) Therapy is administered consistent with expected parameters (typically ≤ 60 minutes per day and total duration usually ≤ 4 weeks); AND 4) Continued therapy beyond a 4‑week treatment period requires demonstration of measurable signs of healing (decrease in wound surface area or volume, decreased exudate, or decreased necrotic tissue).see node text

If these are not met, ES is considered experimental and investigational.

Continuation / discontinuation criteria

Covered continuation conditions:

Continuation of ES: Measurable signs of healing (decrease in wound size measured as surface area or volume, decreased exudate, or decreased necrotic tissue) must be demonstrated within a 4‑week treatment period; continued electrical stimulation is not medically necessary if such signs are not shown within 4 weeks; ES is not medically necessary once the wound is 100% epithelialized; ES provided in the home setting is considered not medically appropriate.100% epithelialization stops ES

Courses exceeding 1 hour per day are not considered medically necessary.

Adjunctive use in chronic wounds

Adjunctive electrical stimulation therapies have been reported effective in preliminary studies when used in addition to standard wound care; larger controlled trials are often lacking.

Adjunctive ES typical study inclusion: Wounds of at least several weeks' duration receiving standard wound care; electrical stimulation applied per device- or study-specific protocol (frequency, session duration, and weekly frequency); outcomes include wound area/volume reduction, rates of complete healing, pain reduction and physiologic endpoints; ES was applied in conjunction with standard measures (e.g., compression for VLUs, dressings, debridement).

Protocols reported include WMCS: 45–60 minutes per session, 2–3×/week (Wirsing et al); HVPC: 45 minutes per session 2–3×/week with silver‑collagen dressing; microcurrent home devices: multiple daily sessions for 4 weeks (Nair 2018); NMES adjunct data are limited and underpowered.

Prevention of recurring pressure ulcers (SCI)

ES for prevention of recurrent pressure ulcers in spinal cord injury (SCI) is under investigation; preliminary feasibility and pilot data show physiologic improvements that may reduce risk.

Prevention in SCI trials: Interventions include regular electrical stimulation targeting gluteal and hamstring muscles (examples: ≥1 hour/day at least 4×/week for 1 year in the SCI PREVOLT RCT; 12‑week daily low‑intensity home ES in pilot studies; 33‑minute long‑pulse programs 5×/week for months in case series). Primary and physiologic outcomes measured include incidence of pressure ulcers, interface pressure distribution, femoral blood flow, muscle thickness, and quality‑of‑life metrics. Pilot studies report improved blood flow, reduced interface pressure, and increased muscle volume, but larger RCT data are pending.

Preventive use remains investigational until RCT results establish clinical effectiveness.

Aetna considers electrical stimulation for chronic cutaneous ulcers to be covered only when used as adjunctive therapy after at least 30 days of conventional wound care with no measurable signs of healing, and when therapy is delivered within expected treatment parameters. A typical covered course would not exceed 60 minutes per day and is generally limited to a total duration of about 4 weeks; continued use beyond 4 weeks requires demonstration of measurable improvement during that period. Use of electrical stimulation for chronic ulcers in the home setting is considered not medically appropriate and courses exceeding 1 hour/day are not medically necessary.

Reports of high‑voltage pulsed‑current (HVPC) therapy include case series and small studies that note potential harms or worsened symptoms in certain comorbid conditions. Caution is advised when considering HVPC for patients with osteomyelitis or significant Raynaud’s syndrome, as case reports and small series have described adverse outcomes or increased pain in these contexts.

The available clinical studies of electrical stimulation modalities are largely preliminary: many are small, single‑center case series or pilot trials with heterogeneous patient populations and variable protocols. These limitations reduce generalizability and indicate that observed benefits require confirmation in larger, well‑designed controlled trials before broad adoption.

This policy bulletin includes links to non‑Aetna websites for convenience. Aetna and its subsidiaries are not responsible or liable for the content, accuracy, or privacy practices of linked non‑Aetna sites, or for products or services described on those sites.

When the policy’s coverage criteria are not satisfied, the use of electrical stimulation is considered experimental and investigational and therefore not medically necessary. Examples include use before completing at least 30 days of conventional wound care, continued therapy without measurable improvement within a 4‑week treatment trial, or treatment courses that exceed recommended duration or daily time limits.

Several novel electrical modalities—such as wireless micro‑current stimulation (WMCS), home microcurrent devices, and various combined therapy approaches—have been reported in small case series or preliminary reports. These techniques remain experimental; the current evidence is preliminary and requires validation by larger, well‑designed controlled studies before they can be considered standard therapy or routinely covered.

Coding guidance

Covered CPT Codes (if selection criteria are met)CPTCovered

97014	Application of a modality to one or more areas; electrical stimulation (unattended)
97032	Application of a modality to one or more areas; electrical stimulation (manual), each 15 minutes

CPT Codes not covered for indications listed in the CPBCPTNot Covered

97035

Application of a modality to 1 or more areas ; ultrasound, each 15 minutes) [modulated ultrasound]

HCPCS Codes covered/relatedHCPCS

G0281	Electrical stimulation, (unattended), to one or more areas, for chronic Stage III and Stage IV pressure ulcers, arterial ulcers, diabetic ulcers, and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care, as part of a therapy plan of care
G0282	Electrical stimulation, (unattended), to one or more areas, for wound care other than described in G0281
G0283	Electrical stimulation, (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care
E0745	Neuromuscular stimulator, electronic shock unit
C9250	Human plasma fibrin sealant, vapor-heated, solvent-detergent (artiss), 2 ml

ICD-10 Codes covered if selection criteria are met / relatedICD-10Covered

E08.621 - E11.622	Diabetes mellitus with ulcer (range of related diabetes-with-ulcer codes listed)
I74.2	Embolism and thrombosis of arteries of the upper extremities [arterial ulcers]
I74.3	Embolism and thrombosis of arteries of the lower extremities [arterial ulcers]
I74.5	Embolism and thrombosis of iliac artery [arterial ulcers]
I77.89	Other specified disorders of arteries and arterioles [arterial ulcers]
I83.001 - I83.229	Varicose veins of lower extremities with ulcer (with/without inflammation)
I87.2	Venous insufficiency (chronic) (peripheral) [venous stasis ulcers]
L89.000 - L89.95	Pressure ulcer [stage 3 or 4 only]
L97.101 - L97.929	Non-pressure chronic ulcer of lower limb

ICD-10 Codes not covered for indications listedICD-10Not Covered

S01.00x+ - S91.359

Open wound, skin (listed as ICD-10 codes not covered for CPB indications; examples shown)

Conventional care duration and trial

Minimum conventional care before ESNo measurable signs of healing after at least 30 days of conventional wound treatments is required before considering electrical stimulation.

Maximum expected total ES durationA course of ES would not typically exceed 4 weeks; continued ES beyond a 4‑week treatment period requires demonstrated measurable signs of healing.

Typical daily treatment limitES therapy would not typically exceed 60 minutes per day; courses exceeding 1 hour/day are not considered medically necessary.

Prior authorization, documentation, and billing actions

Prior Authorization

Prior authorization for covered ES codes — meet selection criteria

Coverage of the listed CPT/HCPCS codes (e.g., 97014, 97032, G0281, G0282) requires that the provider meet the policy selection criteria, including that the ulcer type is eligible and that the member has had at least 30 days of conventional wound care without measurable signs of healing.

Covered CPT codes (97014, 97032) apply only if the CPB selection criteria are satisfied.
HCPCS G0281 describes unattended electrical stimulation for chronic Stage III/IV pressure ulcers, arterial, diabetic, and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care.

Prior Authorization

Prior authorization for ES adjunctive therapies — document failed standard care

For adjunctive or novel ES therapies (e.g., WMCS, microcurrent, HVPC combinations), prior authorization evaluation should include documentation that standard conservative therapies were tried and failed, and device- or protocol-specific treatment details given the preliminary nature of the evidence.

Background and evidence summary

Electrical stimulation has been studied as an adjunct to conventional wound care to promote healing in chronic cutaneous ulcers, including pressure, diabetic, arterial, and venous stasis ulcers. Typical protocols in the literature apply ES near the ulcer for approximately 30–60 minutes per day over several weeks and report reductions in wound size or increased healing rates compared with sham or standard care in some randomized and nonrandomized studies; however, mechanisms remain incompletely understood and evidence quality varies.

Definitions and modality descriptions

Conventional wound treatments

Nutrition and metabolic optimizationOptimization of nutritional status as part of conventional wound treatments.

DebridementDebridement by any means to remove devitalized tissue is required as conventional care.

Clean, moist granulation bed and dressingsMaintenance of a clean, moist bed of granulation tissue with appropriate moist dressings.

Infection control and wound‑type specific careNecessary care to resolve infection and wound‑type specific measures (repositioning, off‑loading, revascularization, compression as applicable).

High‑voltage pulsed current (HVPC)

Waveform and pulseMonophasic pulsed electric current consisting of double‑peaked impulses (5–200 μs).

Policy Summary

PayerAetna

PolicyElectrical Stimulation for Chronic Ulcers

Policy CodePolicy 0680

Change TypeNo material change

Effective DateFeb 6, 2004

Last ReviewSep 15, 2023

Next Review DateJul 25, 2024

Key ActionDocument at least 30 days of conventional wound care without measurable healing and objective wound measurements when requesting coverage for electrical stimulation.

SourceLink

On This Page

Evidence for many adjunctive modalities is preliminary and derived from case series and small trials; authorization should consider requiring documentation of failed standard therapy.

Provide device protocol details (frequency, session duration, intensity) when requesting coverage for adjunctive ES modalities.

Note

Prior authorization note — check plan-specific benefits

This Clinical Policy Bulletin does not substitute for plan-specific benefits or utilization management rules; providers must refer to the member's contract and any plan authorization requirements when submitting requests.

Refer to plan contract terms and utilization management for any plan-level prior authorization requirements.

Prior Authorization

Prior authorization — no requirements specified here

No explicit prior authorization requirements are specified in this document fragment; providers should follow plan-specific processes for prior authorization if applicable.

The CPB itself does not list claim-level prior auth rules in the provided chunks.

Step Therapy

Adjunctive requirement — ≥30 days conventional care first

Electrical stimulation is considered adjunctive therapy only after at least 30 days of conventional wound treatments have been tried without measurable signs of healing.

Conventional treatments include optimization of nutrition, debridement, appropriate dressings, infection control, and wound-type specific measures (e.g., compression for venous ulcers).
The 30-day trial without measurable healing is a required condition for coverage.

Note

Adjunctive use reporting — ES used with standard wound care; step therapy implication

Published studies uniformly report ES was used as an adjunct to standard wound care (for example, compression therapy for venous leg ulcers); therefore step-therapy expectations require prior use of standard conservative measures before ES.

WMCS, HVPC, and microcurrent studies describe concurrent standard wound care (e.g., compression wraps for VLUs, dressings) during ES treatment.
Authorization or coverage determinations should expect documentation that standard conservative measures were in place prior to ES.

Note

Provider action — include contact details for authorization requests

Ensure any prior authorization or coverage request includes clear provider contact and clinical intent so payer reviewers can follow up on clinical questions or missing information.

Include responsible provider name, specialty, and phone/fax on submissions.

Billing Rule

Provider action — identify device/modality and indication on requests

When preparing authorization or claims, label requests with the device or modality being used and the indication (ulcer type and chronicity) to expedite review against policy criteria.

Specify whether treatment is unattended (e.g., G0281) or manual (e.g., 97032) and provide the treating diagnosis code.

Documentation Required

Required documentation — demonstrate ≥30 days of conventional care without measurable healing

Document at least 30 days of prior conventional wound care without measurable signs of healing; include objective wound measurements (surface area or volume) to establish lack of response.

Record dates and descriptions of conventional care (debridement, dressings, compression, off-loading, infection control).
Provide baseline wound size (area or volume) and comparison showing no measurable improvement over the 30-day period.

Documentation Required

Supporting documentation details — wound duration, measurements, treatment parameters

Support authorization with detailed clinical documentation: wound duration, baseline and follow-up measurements, ES treatment parameters (frequency, session duration, intensity), concomitant standard wound care, and any adverse events.

Include measurement method and dates (surface area or volume) and planned monitoring schedule (e.g., 4-week reassessment).
Provide the ES protocol used (sessions per week, minutes per session, current intensity) and documentation of concurrent therapies (e.g., compression).

Note

Plan benefits disclaimer — follow plan contract terms

This Clinical Policy Bulletin is a partial description of plan benefits and does not replace the member's contract; providers are responsible for confirming coverage under the member's plan.

Follow the member's plan contract and utilization management rules for final coverage determinations.

Note

Links to member resources — glossary and legal/program links

For additional resources and administrative information, providers may reference the Aetna glossary, program provisions, legal notices, privacy center, and state directory linked in the policy.

Glossary, program provisions, legal notices, privacy center, and state directory links are provided in the Additional Information section.

Denial Risk

Triggers for denial — timing, lack of response, duration, and setting

Claims may be denied if ES is provided before at least 30 days of conventional wound care without measurable healing, if continued beyond a 4-week ES trial without demonstrated measurable improvement, if therapy exceeds 1 hour per day, or if provided in the home setting.

Denial triggers include: use prior to 30 days of conventional care, lack of measurable healing within 4 weeks of ES, daily durations >60 minutes, and home-setting administration.

Billing Rule

Billing/authorization explicitness — limited explicit triggers in studies

The document's background and study summaries do not specify explicit billing authorization triggers; clinical reports note the need for more controlled data to define optimal protocols and authorization criteria.

No explicit coverage authorization or billing denial triggers are provided beyond the policy's coverage criteria; studies call for further controlled trials.

Denial Risk

Policy history and consequence note — missing documentation or deviations may lead to non-coverage

Failure to provide the required documentation or deviation from the policy's coverage criteria (e.g., treating in the home setting or exceeding recommended durations) may result in non-coverage per the policy history and administrative notes.

Providers should ensure documentation meets the policy's coverage and continuation criteria to avoid non-coverage.

Note

External link liability reminder — Aetna not responsible for linked sites

External links in the policy point to non-Aetna websites for convenience; Aetna and its subsidiaries are not responsible for content, accuracy, or privacy practices on those linked sites.

Providers should not assume endorsement or liability for content on external sites linked from the policy.

Peak current amplitudeHigh peak‑current amplitude (approximately 2–2.5 A).

Voltage & frequencyHigh voltage (up to ~500 V) delivered at 1–125 pulses per second to activate skin battery and cellular galvanotaxis.

Wireless micro‑current stimulation (WMCS)

Contactless deliveryWMCS is a contactless method transferring micro‑current to surface wounds from a distance using oxygen and nitrogen electron exchange.

Typical protocol reportedReported protocols include sessions of 45–60 minutes at ~1.5 μA, 2–3 times per week in case series (e.g., 47‑patient series).

Evidence levelEvidence consists of case reports and case series with preliminary promising results that require validation by well‑designed studies.

Neuromuscular electrical stimulation (NMES)

Therapeutic intentNMES is intended to activate muscle contractions to increase limb hemodynamics as an adjunctive therapy for diabetic foot ulcers and venous disease.

Evidence summarySystematic review identified small prospective studies (7 studies, 140 subjects) with limited DFU data; some studies showed improved healing but were underpowered and confounded.

Clinical implicationData support a potential adjunctive role for NMES in DFU, but higher‑quality evidence is needed before routine adoption.

Low‑intensity electrical stimulation (LI ES)

Device & target musclesHome‑based gluteal and hamstring low‑intensity ES as described in Barton et al pilot.

Protocol used50 Hz protocol with daily self‑administered sessions over a 12‑week pilot (daily use with cycles of stimulation/rest totaling ~6 hours/day in study design).

Observed effectsPilot reported improved micro‑vasculature, increased femoral artery diameter and blood flow, decreased interface sitting pressure, and increased thigh volume.

Long‑pulse electrical stimulation

Program durationHome‑based long‑pulse stimulation program delivered 33 minutes per session, 5 times per week, over months (reported 3 and 6‑month assessments).

Intended outcomeAimed at restoring muscle structure and trophic properties in chronic spinal cord injury to improve cushioning and potentially reduce pressure ulcer risk.

Preliminary resultsCase‑series reported increases in muscle thickness and decreases in adipose tissue over 6 months in a small cohort; mechanisms require further investigation.