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    v1.0.31
    OpenPayerBilling CodesDurable Medical EquipmentHCPCS hcpcs-e0770-functional-electrical-stimulator-transcutaneous
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    HCPCS Level II E0770: Functional Electrical Stimulator, Transcutaneous

    HCPCS Level II code E0770 describes a functional electrical stimulator system for transcutaneous stimulation of nerve and/or muscle groups, a durable medical equipment service used to provide neuromuscular stimulation for functional purposes; the service type is durable medical equipment / therapeutic neuromuscular stimulation, and the typical site of service is outpatient clinic, home, or rehabilitation facility where a complete external stimulator system is used.

    For related coverage guidance, see recent payer policy updates: Sleep Position Trainer, Hospital Beds Corporate Medical Policy, Continuous Passive Motion Devices with Remote Monitoring or Adaptive Capabilities.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 58-year-old male with chronic right foot drop after a stroke, presenting to outpatient physical medicine and rehabilitation for functional electrical stimulation (FES) to improve dorsiflexion during gait. The clinical workflow begins with a comprehensive evaluation by a physiatrist or physical therapist to document neuromuscular deficit, gait impairment, and prior conservative treatments. The clinician documents baseline gait assessment, muscle strength, spasticity, and goals of treatment. A trial of transcutaneous FES is performed in clinic to assess tolerability, appropriate electrode placement, stimulation parameters, and functional benefit. If clinical benefit is observed, the patient is issued a complete transcutaneous FES system and receives device education, electrode application training, and a treatment plan for home use. Follow-up visits occur to adjust settings, monitor skin integrity and motor response, and document objective gait improvement or functional gains. Billing uses E0770 to report the complete transcutaneous functional electrical stimulator system provided to the patient, with appropriate modifier(s) applied based on payer requirements and service circumstances.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97110Therapeutic exercises to develop strength, endurance, range of motion and flexibility (each 15 minutes)Often performed before or after FES supply to build strength and integrate functional gains into gait training.
    97112Neuromuscular reeducation of movement, balance, coordination, kinesthetic sense, posture, and proprioception (each 15 minutes)Commonly used during device trial and follow-up therapy sessions to retrain motor patterns with FES assistance.
    97760Orthotic management and training, upper extremity, lower extremity, and/or trunk, initial fitting and training (includes adjustments)Used when the FES system is combined with or integrated into an orthotic device requiring initial fitting and instruction.
    99456Work related or medical disability examination (impairment evaluation)May be used in documentation of functional impairment and justification for durable medical equipment like FES in disability evaluations.
    99070Supplies and materials provided by the physician over and above those usually included with the office visitApplicable for additional disposable electrodes or supplies provided at the time of FES system issue.

    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…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    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…
    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
    2084P0800X
    208D00000X
    163WR0006X
    251C00000X
    124Q00000X
    364SC2300X
    170100000X
    103TP0016X

    Related Payer Policy Updates

    Specialty: Durable Medical Equipment (DME)1 / 3

    10 rows

    PolicyPayerEffective Date
    Sleep Position Trainerregence2027-01-01
    Hospital Beds Corporate Medical Policybcbsvermont2027-01-01
    Continuous Passive Motion Devices with Remote Monitoring or Adaptive CapabilitiesBlue Cross Blue Shield - Rhode Island2026-12-01
    Bone Growth StimulatorsMass General Brigham Health Plan2026-12-01
    Prior Authorization for Durable Medical Equipment (DME)Blue Cross Blue Shield - Rhode Island2026-12-01
    Patient Liftsuniverahealthcare2026-11-16
    Tonic Motor Activation (TOMAC) for Restless Legs Syndromeregence2026-11-01
    Functional Neuromuscular Electrical Stimulationregence2026-11-01
    Noninvasive Ventilators in the Home Settingregence2026-11-01
    Medical Car SeatsCareSource2026-11-01

    Related Codes

    HCPCS-E0100-CANE-DURABLE-MEDICAL-EQUIPMENT-AMBULATION

    HCPCS E0100: Cane, Adjustable or Fixed, With Tip

    HCPCS-E0105-CANE-QUAD-THREE-PRONG-MOBILITY-AID

    HCPCS Level II E0105: Cane, Quad or Three-Prong, Includes Tips

    HCPCS-E0110-FOREARM-CRUTCHES-PAIR-DME-MOBILITY

    HCPCS Level II E0110: Forearm Crutches, Pair, Complete with Tips and Handgrips

    HCPCS-E0111-CRUTCH-FOREARM-DURABLE-MEDICAL-EQUIPMENT

    HCPCS Level II E0111: Crutch, Forearm, With Tip and Handgrips

    HCPCS-E0112-UNDERARM-WOOD-CRUTCHES-PAIR

    HCPCS Level II E0112: Underarm Wooden Crutches, Pair

    HCPCS-E0113-CRUTCH-UNDERARM-WOOD-ADJUSTABLE-FIXED-WITH-PAD-TIP-HANDGRIP

    HCPCS Level II E0113: Crutch Underarm, Wood, Adjustable or Fixed

    HCPCS-E0114-UNDERARM-CRUTCHES-PAIR-ADJUSTABLE-FIXED

    HCPCS Level II E0114: Underarm (Axillary) Crutches, Adjustable or Fixed, Pair

    HCPCS-E0116-UNDERARM-CRUTCH-NON-WOOD-ADJUSTABLE-FIXED

    HCPCS E0116: Underarm Crutch, Non-Wood, Adjustable/Fixed with Pad

    HCPCS-E0117-ARTICULATING-SPRING-ASSISTED-UNDERARM-CRUTCH

    HCPCS Level II E0117: Crutch, Underarm, Articulating, Spring-Assisted

    HCPCS-E0118-LOWER-LEG-PLATFORM-CRUTCH-SUBSTITUTE

    HCPCS E0118: Crutch Substitute, Lower Leg Platform

    Showing 1–10 of 670

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    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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