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    v1.0.28
    OpenPayerBilling CodesOrthotic Procedures and servicesHCPCS hcpcs-l1100-ctlsoscoliosis-orthosis-ring-flange
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    HCPCS Level II L1100: Ring Flange Addition to CTLSO or Scoliosis Orthosis

    HCPCS Level II code L1100 describes an addition to a CTLSO or scoliosis orthosis consisting of a ring flange made of plastic or leather; this is an orthotic accessory used to modify or enhance a cervical-thoracic-lumbar-sacral orthosis for spinal support. Service type: orthotic accessory/addition. Typical site of service: durable medical equipment provider, orthotics clinic, or outpatient rehabilitation setting where custom or prefabricated spinal orthoses are fabricated or adjusted.

    For related coverage guidance, see recent payer policy updates: Interferential Stimulation Devices (for home use), Durable Medical Equipment (DME): Tumor Treating Fields (Alternating Electric Field Therapy) Medical Guideline, Durable Medical Equipment (DME): Bone Growth Stimulators Medical Guideline.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 14-year-old adolescent with progressive idiopathic scoliosis is seen in the orthotics clinic for fitting and adjustment of a custom thoracolumbosacral orthosis (TLSO). The patient previously received a molded TLSO for spinal curve control; during a routine follow-up the orthotist documents pressure at the superior thoracic ring and determines that a ring flange (plastic or leather) addition is required to improve trimline support and reduce migration of the orthosis. The orthotist removes the shell, fabricates and attaches a ring flange accessory on-site, performs necessary adjustments and documents measurements, materials and time. The addition is billed as L1100 and accompanies the primary TLSO item or repair. Typical workflow includes clinical evaluation by the orthotist (and referring orthopedic surgeon review), ordering and authorization through the patient’s durable medical equipment benefit or orthotics supplier, fabrication of the flange, patient fitting, functional testing of fit and pressure areas, and documentation of medical necessity tied to the underlying spinal diagnosis such as scoliosis. Typical site of service is an outpatient orthotics/prosthetics clinic, hospital-based orthotics department, or ambulatory orthopedic clinic with orthotist services.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97760Orthotic(s) fitting and training, initial encounter, lower or upper extremity, 15 minutesSometimes billed when initial orthotic fitting and patient training are provided alongside a flange addition; documents face-to-face fitting time
    97763Orthotic(s) training, subsequent encounter, 15 minutesUsed when follow-up training or adjustment time is provided after flange addition
    99070Supplies and materials (except spectacles) provided by physician or other qualified health care professionalMay be used by some providers to bill for non-coded minor supplies or non-stock materials used in flange fabrication per payer rules
    99080Special reports and forms; completion of medical formBilled when extra documentation, forms, or detailed reports are provided to payers or employers related to orthosis modification
    S1040Orthotic adjustment/repair (miscellaneous code)Occasionally used by institutional billers alongside L1100 where local coding rules permit for adjustments and repairs of orthoses

    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…
    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…
    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…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207T00000XNeurological Surgery PhysicianA neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and reh…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    163W00000XRegistered Nurse(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive…
    372600000XAdult CompanionAn individual who provides supervision, socialization, and non-medical care to a functionally impaired adult. Companions may assist or supervise the …
    261QD0000XDental Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    276400000XSubstance Use Disorder Rehabilitation Hospital UnitA distinct part of a hospital that provides medically monitored, interdisciplinary addiction-focused treatment to patients/clients who have psychoacti…
    261QR0405XSubstance Use Disorder Rehabilitation Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    207RA0201XAllergy & Immunology (Internal Medicine) PhysicianAn internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligib…

    Related ICD-10-CM Codes

    18 rows

    ICD-10-CM CodeDescription
    M24.219Disorder of ligament, unspecified shoulder
    M25.569Pain in unspecified knee
    M40.10Other secondary kyphosis, site unspecified
    M41.9Scoliosis, unspecified
    M48.02Spinal stenosis, cervical region
    M48.04Spinal stenosis, thoracic region
    M50.20Other cervical disc displacement, unspecified cervical region
    M51.16Intervertebral disc disorders with radiculopathy, lumbar region
    M51.27Other intervertebral disc displacement, lumbosacral region
    M96.1Postlaminectomy syndrome, not elsewhere classified

    Showing 1–10 of 18

    Related Payer Policy Updates

    Specialty: Durable Medical Equipment (DME)1 / 3

    5 rows

    PolicyPayerEffective Date
    Interferential Stimulation Devices (for home use)Moda Health2026-10-01
    Durable Medical Equipment (DME): Tumor Treating Fields (Alternating Electric Field Therapy) Medical GuidelineWPS Health Insurance2026-10-01
    Durable Medical Equipment (DME): Bone Growth Stimulators Medical GuidelineWPS Health Insurance2026-10-01
    General Durable Medical Equipment (DME) Medical GuidelineWPS Health Insurance2026-10-01
    Prior Authorization for Durable Medical Equipment (DME)Blue Cross Blue Shield - Rhode Island2026-10-01

    Related Codes

    HCPCS-L0112-CRANIAL-CERVICAL-ORTHOSIS-CONGENITAL-TORTICOLLIS-CUSTOM

    HCPCS L0112: Cranial Cervical Orthosis, Congenital Torticollis Type

    HCPCS-L0113-CRANIAL-CERVICAL-ORTHOSIS-TORTICOLLIS

    HCPCS Level II L0113: Prefabricated Cranial Cervical Orthosis for Torticollis

    HCPCS-L0130-CERVICAL-FLEXIBLE-THERMOPLASTIC-COLLAR-MOLDED-TO-PATIENT

    HCPCS Level II L0130: Cervical Flexible Thermoplastic Collar, Molded to Patient

    HCPCS-L0140-CERVICAL-SEMI-RIGID-ADJUSTABLE-PLASTIC-COLLAR

    HCPCS Level II L0140: Cervical Semi-Rigid Adjustable Plastic Collar

    HCPCS-L0150-CERVICAL-SEMI-RIGID-ADJUSTABLE-CHIN-CUP

    HCPCS Level II L0150: Cervical Semi-Rigid Adjustable Chin Cup

    HCPCS-L0160-CERVICAL-SEMI-RIGID-OCCIPITAL-MANDIBULAR-SUPPORT

    HCPCS Level II L0160: Cervical Semi-Rigid Occipital/Mandibular Support

    HCPCS-L0170-CERVICAL-COLLAR-MOLDED-TO-PATIENT-MODEL

    HCPCS Level II L0170: Cervical Collar, Custom-Molded

    HCPCS-L0172-CERVICAL-COLLAR-SEMI-RIGID-THERMOPLASTIC-FOAM

    HCPCS L0172: Cervical Collar, Semi-Rigid Prefabricated

    HCPCS-L0174-CERVICAL-COLLAR-SEMI-RIGID-THORACIC-EXTENSION

    HCPCS L0174: Cervical Collar, Semi-Rigid Thermoplastic with Thoracic Extension

    HCPCS-L0180-CERVICAL-MULTIPLE-POST-COLLAR-OCCIPITAL-MANDIBULAR-ADJUSTABLE

    HCPCS Level II L0180: Cervical Orthosis with Occipital/Mandibular Supports

    Showing 1–10 of 466

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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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