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    v1.0.28
    OpenPayerBilling CodesTemporary CodesHCPCS hcpcs-q4050-cast-supplies-unlisted-cast-materials
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    HCPCS Q4050: Cast Supplies, Unlisted Types and Materials

    HCPCS Level II code Q4050 describes cast supplies for unlisted types and materials of casts, used to report miscellaneous or nonstandard casting materials and supplies provided during fracture or immobilization care; the service type is durable medical supplies/orthopedic casting supply, and the typical site of service is outpatient clinic, orthopedic office, or hospital setting where casting materials are applied or supplied.

    For related coverage guidance, see recent payer policy updates: B-Hemolytic Streptococcus Testing, Human Immunodeficiency Virus (HIV) — Coverage Criteria for Testing and Resistance Assays, Hepatitis Testing (A, B, C, D) Coverage Criteria.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A patient presents to an outpatient orthopedics clinic after sustaining a distal radius fracture on the dominant wrist following a fall from standing height. Radiographs confirm a non-displaced fracture requiring immobilization rather than operative fixation. The clinician applies a short-arm cast using standard casting materials and additionally documents use of an unlisted or specialty cast component (for example, a custom thermoplastic splinting component, specialty padding, or unique casting material) that is not represented by a specific HCPCS supply code. Billing uses Q4050 for the unlisted cast supply. Typical workflow: the clinician documents diagnosis and procedure, supplies used (list the unlisted component), time and technique for cast application, and any applicable modifiers (for example LT for left side or RT for right side). The service is commonly performed in an outpatient orthopedic clinic, urgent care center, or emergency department. Supplies coded with Q4050 are billed to the patient’s medical insurer along with the professional service and any applicable facility charges.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    29125Application of short arm cast (shoulder to hand)Commonly performed when immobilizing distal forearm fractures; cast supplies including unlisted components may be billed with Q4050
    29075Application of finger cast; includes materialWhen treating isolated phalangeal fractures, specialty cast supplies sometimes are unlisted and billed with Q4050
    29105Application of long arm cast (axilla to hand)For fractures or conditions requiring extended immobilization; Q4050 may capture nonstandard materials used
    29615Application of short leg cast (below knee to toes)For lower extremity immobilization where specialty padding or materials are required beyond standard supplies
    99070Supplies and materials (except spectacles), provided by physician over and above those usually included with the office visit or procedureSometimes used for general additional supplies; when a specific HCPCS unlisted supply code is required, Q4050 is used for unique cast materials

    Related Modifiers

    7 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    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…
    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…
    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
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    364S00000XClinical Nurse SpecialistA registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses…
    390200000XStudent in an Organized Health Care Education/Training ProgramAn individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensur…
    111NS0005XSports Physician ChiropractorA sports chiropractor is uniquely trained to provide care and treatment of injuries or illness resulting from sports and physical fitness activities. …
    261QE0800XEndoscopy Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    261QR1100XResearch Clinic/CenterAmbulatory Health Care Facilities · Clinic/Center
    324500000XSubstance Abuse Rehabilitation FacilityA facility or distinct part of a facility that provides a 24 hr therapeutically planned living and rehabilitative intervention environment for the tre…

    Related ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    M21.371Foot drop, right foot
    M21.372Foot drop, left foot
    M24.271Disorder of ligament, right ankle
    M84.451APathological fracture, right femur, initial encounter for fracture
    M84.559APathological fracture in neoplastic disease, hip, unspecified, initial encounter for fracture
    S42.201AUnspecified fracture of upper end of right humerus, initial encounter for closed fracture
    S42.201DUnspecified fracture of upper end of right humerus, subsequent encounter for fracture with routine healing
    S42.301AUnspecified fracture of shaft of humerus, right arm, initial encounter for closed fracture
    S52.501AUnspecified fracture of the lower end of right radius, initial encounter for closed fracture
    S52.501DUnspecified fracture of the lower end of right radius, subsequent encounter for closed fracture with routine healing

    Showing 1–10 of 24

    Related Payer Policy Updates

    Specialty: Infectious Disease1 / 3

    9 rows

    PolicyPayerEffective Date
    B-Hemolytic Streptococcus TestingOscar Health2026-10-01
    Human Immunodeficiency Virus (HIV) — Coverage Criteria for Testing and Resistance AssaysOscar Health2026-10-01
    Hepatitis Testing (A, B, C, D) Coverage CriteriaOscar Health2026-10-01
    Lyme Disease Testing Coverage CriteriaOscar Health2026-10-01
    Pathogen Panel TestingOscar Health2026-10-01
    Diagnostic Testing of Common Sexually Transmitted InfectionsOscar Health2026-10-01
    Testing for Vector-Borne InfectionsOscar Health2026-10-01
    Coronavirus Testing in the Outpatient SettingOscar Health2026-10-01
    Testing for Diagnosis of Active or Latent TuberculosisOscar Health2026-10-01

    Related Codes

    HCPCS-LEVEL-II-Q4139-INJECTABLE-AMNIOMATRIX-BIODMATRIX-1-CC

    HCPCS Q4139: Amniomatrix or Biodmatrix, Injectable, 1 cc

    HCPCS-LEVEL-II-Q4256-AREA-BASED-PROCEDURAL-ADD-ON-PER-SQ-CM

    HCPCS Q4256: MLG-complete Skin Graft Material, Per Sq Cm

    HCPCS-LEVEL-II-Q5132-ADALIMUMAB-AFZB-ABRILADA-10MG-INJECTION

    HCPCS Level II Q5132: Injection, adalimumab-afzb (Abrilada), 10 mg

    HCPCS-Q0035-CARDIOKYMOGRAPHY-CARDIAC-MOTION-RECORDING

    HCPCS Level II Q0035: Cardiokymography

    HCPCS-Q0081-INFUSION-THERAPY-NON-CHEMOTHERAPEUTIC-PER-VISIT

    HCPCS Level II Q0081: Infusion Therapy, Non‑Chemotherapeutic, Per Visit

    HCPCS-Q0083-CHEMOTHERAPY-NON-INFUSION-ADMINISTRATION

    HCPCS Q0083: Chemotherapy Administration, Non-Infusion Methods

    HCPCS-Q0084-CHEMOTHERAPY-INFUSION-ADMINISTRATION-PER-VISIT

    HCPCS Q0084: Chemotherapy Infusion Administration, Per Visit

    HCPCS-Q0085-CHEMOTHERAPY-INFUSION-PLUS-OTHER-TECHNIQUES-PER-VISIT

    HCPCS Q0085: Chemotherapy Infusion Plus Other Technique(s), Per Visit

    HCPCS-Q0091-PAP-SMEAR-SPECIMEN-COLLECTION-TRANSPORT

    HCPCS Q0091: Screening Papanicolaou Smear Collection and Transport

    HCPCS-Q0092-PORTABLE-XRAY-EQUIPMENT-SETUP

    HCPCS Q0092: Set-up Portable X-ray Equipment

    Showing 1–10 of 629

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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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