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    v1.0.31
    OpenPayerBilling CodesProsthetic ProceduresHCPCS hcpcs-l8721-prosthetic-receptor-sole-replacement
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    HCPCS Level II L8721: Receptor Sole for Prosthetic Device Replacement

    HCPCS Level II code L8721 describes a replacement receptor sole designed for use with the associated device L8720; the service type is prosthetic component replacement, typically provided in outpatient prosthetics/orthotics clinics or durable medical equipment specialty settings where prosthesis components are fitted and replaced.

    For related coverage guidance, see recent payer policy updates: Speech Therapy for Autism Disorders - Medical Policy, Sensory Integration Therapy and Auditory Integration Training, Skilled Nursing and Skilled Rehabilitation Services (Outpatient).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 68-year-old patient with a transtibial amputation presents for routine prosthetic maintenance after noticing excessive wear and instability of the prosthetic foot/sole interface. The prosthetist evaluates the socket and components and determines that the receptor sole component used with the existing adapter (L8720) is worn and must be replaced to restore proper alignment and load transfer. The clinical workflow includes a prosthetic evaluation, measurement and selection of the replacement receptor sole (L8721), ordering the replacement part, documenting medical necessity and functional deficits (gait instability, pain, skin irritation), scheduling the patient for component replacement, performing the replacement in the prosthetics clinic or outpatient orthotics/prosthetics facility, and post-replacement gait assessment and patient education.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97760Orthotic/prosthetic management and training, initial encounter; lower extremity prosthesisUsed for initial and follow-up prosthetic training and gait assessment when a receptor sole is replaced.
    97761Prosthetic training, subsequent encounterUsed for continued training and device accommodation after replacement of the receptor sole.
    99456Work-related or medical disability examinationUsed when functional capacity evaluation or return-to-work assessment is performed after prosthetic change (work-related context).
    99070Supplies and materials (e.g., equipment) provided by the physician over and above those usually includedMay be used if additional non-routine supplies are provided during replacement (check payer rules).
    99080Administrative services related to compliance (not specific CPT but commonly billed paperwork)Used for extensive documentation, prior authorization, or forms required by payers when replacing prosthetic components.

    Related Modifiers

    8 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…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    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…
    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…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    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
    208D00000X
    363A00000X
    261QD0000X
    126900000X
    246ZB0600X
    111NT0100X
    207SM0001X
    111NI0900X

    Related ICD-10-CM Codes

    15 rows

    ICD-10-CM CodeDescription
    E11.621Type 2 diabetes mellitus with foot ulcer
    G57.61Lesion of plantar nerve, right lower limb
    M20.11Hallux valgus (acquired), right foot
    M20.12Hallux valgus (acquired), left foot
    M24.571Contracture, right ankle
    M24.572Contracture, left ankle
    M24.573Contracture, unspecified ankle
    M25.571Pain in right ankle and joints of right foot
    M25.572Pain in left ankle and joints of left foot
    M77.9Enthesopathy, unspecified

    Showing 1–10 of 15

    Related Payer Policy Updates

    Specialty: Physical Medicine, Rehab & Therapies1 / 2

    10 rows

    PolicyPayerEffective Date
    Speech Therapy for Autism Disorders - Medical PolicyHealth-New-England2026-12-01
    Sensory Integration Therapy and Auditory Integration TrainingColorado Rocky Mountain Health Plans2026-11-01
    Skilled Nursing and Skilled Rehabilitation Services (Outpatient)Anthem2026-10-01
    Habilitation and Rehabilitation Therapy (Occupational, Physical, and Speech) (for New Mexico Only)UnitedHealthcare2026-10-01
    Physical Therapy/Medicine Corporate Medical Policybcbsvermont2026-10-01
    Occupational Therapy Corporate Medical Policybcbsvermont2026-10-01
    Speech Language Pathology/Therapy Services Corporate Medical Policybcbsvermont2026-10-01
    Cognitive Rehabilitation Corporate Medical Policybcbsvermont2026-10-01
    Biomagnetic TherapyConnectiCare2026-09-11
    Habilitation and Rehabilitation Therapy (Occupational, Physical, and Speech) (for Idaho Only)UnitedHealthcare2026-09-01

    Related Codes

    HCPCS-L5000-PARTIAL-FOOT-SHOE-INSERT-LONGITUDINAL-ARCH-TOE-FILLER

    HCPCS Level II L5000: Partial Foot Shoe Insert with Longitudinal Arch, Toe Filler

    HCPCS-L5010-PARTIAL-FOOT-MOLDED-SOCKET-ANKLE-HEIGHT-TOE-FILLER

    HCPCS L5010: Partial Foot Molded Socket, Ankle Height, With Toe Filler

    HCPCS-L5020-PARTIAL-FOOT-MOLDED-SOCKET-TIBIAL-TUBERCLE-TOE-FILLER

    HCPCS L5020: Partial Foot Molded Socket with Toe Filler

    HCPCS-L5050-ANKLE-SYMES-MOLDED-SOCKET-SACH-FOOT

    HCPCS L5050: Ankle/Symes Molded Socket with SACH Foot

    HCPCS-L5060-ANKLE-SYMES-METAL-FRAME-MOLDED-LEATHER-SOCKET-ARTICULATED-ANKLE-FOOT

    HCPCS L5060: Ankle/Symes Metal Frame with Molded Leather Socket

    HCPCS-L5100-BELOW-KNEE-MOLDED-SOCKET-SHIN-SACH-FOOT

    HCPCS Level II L5100: Below-Knee Molded Socket with Shin and SACH Foot

    HCPCS-L5105-BELOW-KNEE-PLASTIC-SOCKET-SACH-FOOT

    HCPCS L5105: Below-Knee Plastic Socket Prosthesis with SACH Foot

    HCPCS-L5150-KNEE-DISARTICULATION-MOLDED-SOCKET-EXTERNAL-KNEE-SACH-FOOT

    HCPCS L5150: Knee Disarticulation Molded Socket with External Knee and SACH Foot

    HCPCS-L5160-KNEE-DISARTICULATION-MOLDED-SOCKET-BENT-KNEE-SACH-FOOT

    HCPCS Level II L5160: Knee Disarticulation Molded Socket, Bent Knee Configuration

    HCPCS-L5200-ABOVE-KNEE-MOLDED-SOCKET-SINGLE-AXIS-KNEE-SACH-FOOT

    HCPCS Level II L5200: Above-knee Prosthesis with Molded Socket and Single-axis Knee

    Showing 1–10 of 472

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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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