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    v1.0.28
    OpenPayerBilling CodesDrugs Administered Other than Oral MethodHCPCS hcpcs-j3304-triamcinolone-extended-release-injection-1mg
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    HCPCS Level II J3304: Triamcinolone Acetonide Extended-Release Injection, 1 mg

    HCPCS Level II code J3304 describes an injection of triamcinolone acetonide, preservative-free, extended-release microsphere formulation, 1 mg, used as an intra-articular or periarticular corticosteroid treatment; the service is a single-dose injectable medication typically administered in an outpatient clinic, physician office, or ambulatory surgical setting.

    For related coverage guidance, see recent payer policy updates: Epithelial Cell Cytology in Breast Cancer Risk Assessment, Chemotherapy Observation or Inpatient Hospitalization (for New Mexico Only), Umbilical Cord Blood Harvesting and Storage for Future Use (for Indiana Only).

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    Clinical & Coding Specifications

    Clinical Context

    A 62-year-old patient with chronic knee osteoarthritis presents to an orthopedics or sports medicine clinic with persistent joint pain despite oral analgesics and physical therapy. The clinician assesses the patient, documents focal synovitis and localized joint-line tenderness, and determines intra-articular therapy is appropriate. After informed consent and review of allergies, the provider prepares a single-dose, preservative-free, extended-release microsphere formulation of triamcinolone acetonide (J3304, 1 mg) for intra-articular injection. The procedure is performed in an outpatient clinic or ambulatory surgery center under aseptic technique, often with local anesthetic and ultrasound guidance. The encounter includes pre-procedure evaluation, the injection, observation for immediate adverse reaction, and post-procedure instructions. Typical documentation contains indication, informed consent, laterality (RT/LT modifier when applicable), medication name and NDC if recorded, route (intra-articular), dose, lot number, and patient response. Billing uses the HCPCS Level II code J3304; related evaluation and management or procedure CPT codes may be reported separately when appropriate. Typical payors for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    20610Arthrocentesis, aspiration and/or injection, major joint or bursa (e.g., shoulder, hip, knee)Commonly used for intra-articular injection of J3304; documents the procedural component of injection into a major joint
    20552Injection(s); single or multiple trigger point(s), 1 or 2 musclesPerformed when concomitant trigger point injections are clinically indicated during the same visit
    77002Fluoroscopic guidance for needle placement (radiological supervision and interpretation)Used when image guidance (fluoroscopy) is required for accurate intra-articular placement of the medication
    76942Ultrasonic guidance for needle placementFrequently used when ultrasound guidance is utilized for joint injection to improve accuracy
    99070Supplies and materials (e.g., drugs, lenses, syringes, etc.) provided by the physician over and above those usually included with the office visit or procedureMay be used to report additional non-billable supplies associated with administering J3304 when payer allows

    Related Modifiers

    8 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…
    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…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207X00000XOrthopaedic Surgery PhysicianAn orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated…
    2086S0102XSurgical Critical Care PhysicianA surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critica…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    363A00000XPhysician AssistantA physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
    367500000XCertified Registered Nurse Anesthetist(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, prov…
    103TW0100XDeactivated - Psychotherapy Women
    103TE1100XExercise & Sports PsychologistA psychologist with a proficiency in sports psychology that uses psychological knowledge and skills to address optimal performance and well-being of a…
    332BD1200XDialysis Equipment & Supplies (DME)Suppliers · Durable Medical Equipment & Medical Supplies

    Related Payer Policy Updates

    Specialty: Hematology/Oncology1 / 3

    10 rows

    PolicyPayerEffective Date
    Epithelial Cell Cytology in Breast Cancer Risk AssessmentOscar Health2026-10-01
    Chemotherapy Observation or Inpatient Hospitalization (for New Mexico Only)UnitedHealthcare2026-08-01
    Umbilical Cord Blood Harvesting and Storage for Future Use (for Indiana Only)UnitedHealthcare2026-08-01
    Antibody-Drug ConjugatesPremera Bluecross2026-08-01
    Chimeric Antigen Receptor (CAR) T-Cell TherapyColorado Rocky Mountain Health Plans2026-08-01
    Allogeneic Hematopoietic Progenitor Cell TherapyAmbetter Georgia2026-08-01
    Umbilical Cord Blood Harvesting and Storage for Future Use (for Idaho Only)UnitedHealthcare2026-08-01
    Umbilical Cord Blood Harvesting and Storage for Future Use (for New Jersey Only)UnitedHealthcare2026-08-01
    Umbilical Cord Blood Harvesting and Storage for Future Use (for Ohio Only)UnitedHealthcare2026-08-01
    Reblozyl (luspatercept-aamt) Medical Benefit Drug PolicyUnitedHealthcare2026-08-01

    Related Codes

    HCPCS-J0013-ESKETAMINE-NASAL-SPRAY-1MG

    HCPCS Level II J0013: Esketamine Nasal Spray, 1 mg

    HCPCS-J0120-INJECTION-TETRACYCLINE-250MG

    HCPCS Level II J0120: Injection, Tetracycline, up to 250 mg

    HCPCS-J0121-OMADACYCLINE-INJECTION-1MG

    HCPCS Level II J0121: Omadacycline Injection, 1 mg

    HCPCS-J0122-ERAVACYCLINE-INJECTION-1MG

    HCPCS Level II J0122: Injection, eravacycline, 1 mg

    HCPCS-J0129-ABATACEPT-INJECTION-10MG-PHYSICIAN-SUPERVISED

    HCPCS Level II J0129: Abatacept Injection, 10 mg

    HCPCS-J0130-INJECTION-ABCIXIMAB-10MG

    HCPCS Level II J0130: Injection abciximab, 10 mg

    HCPCS-J0131-INJECTION-ACETAMINOPHEN-10MG-PARENTERAL-ANALGESIC

    HCPCS Level II J0131: Injection, Acetaminophen 10 mg

    HCPCS-J0132-INJECTION-ACETYLCYSTEINE-100MG-INJECTABLE-MEDICATION

    HCPCS Level II J0132: Injection, Acetylcysteine 100 mg

    HCPCS-J0133-ACYCLOVIR-INJECTION-5MG

    HCPCS Level II J0133: Injection, Acyclovir 5 mg

    HCPCS-J0134-ACETAMINOPHEN-INJECTION-FRESENIUS-KABI-10MG

    HCPCS Level II J0134: Injection, Acetaminophen (10 mg)

    Showing 1–10 of 991

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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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