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    v1.0.30
    OpenPayerBilling CodesDrugs Administered Other than Oral MethodHCPCS hcpcs-j0129-abatacept-injection-10mg-physician-supervised
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    HCPCS Level II J0129: Abatacept Injection, 10 mg

    HCPCS Level II code J0129 represents a 10 mg unit of abatacept supplied for injection and is reported when the drug is administered under the direct supervision of a physician; the service is a physician‑administered biologic infusion/injection typically provided in an outpatient infusion clinic, physician office, or hospital outpatient department.

    For related coverage guidance, see recent payer policy updates: Hematology - Adzynma, Tumor Treating Fields for Pancreatic Cancer, Axicabtagene ciloleucel (Yescarta®) coverage.

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    Clinical & Coding Specifications

    Clinical Context

    A 62-year-old patient with moderate-to-severe rheumatoid arthritis presents to an outpatient infusion clinic for administration of abatacept. The medication is billed under J0129 per Medicare guidance when the injectable product is administered under direct physician supervision and not self-administered. The clinical workflow begins with a physician evaluation confirming indication and screening for active infection, recent vaccinations, and medication interactions. A prescriber order and allergy verification are completed by nursing; baseline vital signs and pre-medications (if indicated) are documented. Pharmacy compounds or dispenses the exact 10 mg vial(s) of abatacept and delivers them to the infusion area. A registered nurse verifies patient identity, obtains informed consent for the injection, and performs the supervised subcutaneous or intravenous injection as ordered. Post-administration observation and documentation of lot number, expiration date, dose, route, site, and any immediate adverse reaction are recorded in the medical record. Appropriate claim submission includes J0129 with any applicable modifier(s) reflecting the service circumstances and the related diagnosis code(s) for rheumatoid arthritis or other indicated autoimmune conditions.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    96372Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); subcutaneous or intramuscularUsed when abatacept is administered as a supervised subcutaneous injection in the clinic setting.
    96413Chemotherapy administration, infusion technique; intravenous infusion for therapy, prophylaxis, or diagnosis (each additional hour)Used when abatacept is administered intravenously and prolonged infusion/monitoring is required.
    96415Chemotherapy administration, intravenous infusion technique, up to 1 hour, single or initial substance/drugUsed when abatacept is given via IV with typical infusion time up to one hour.
    99024Postoperative follow-up visit, included in global serviceUse for routine follow-up visits related to biologic therapy when payer requires separate reporting.
    99070Supplies and materials (e.g., syringe, needle, dressing), non-reusable, used for administrationUse to report separately billable supplies used in the injection process.

    Related Modifiers

    9 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…
    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…
    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 Code
    208000000X
    207P00000X
    207L00000X
    363L00000X
    364S00000X
    172V00000X
    261QC1500X
    163WC3500X

    Related ICD-10-CM Codes

    22 rows

    ICD-10-CM CodeDescription
    E11.9Type 2 diabetes mellitus without complications
    G62.9Polyneuropathy, unspecified
    L40.59Other psoriatic arthropathy
    L40.9Psoriasis, unspecified
    M05.79Rheumatoid arthritis with rheumatoid factor of multiple sites without organ or systems involvement
    M05.89Other rheumatoid arthritis with rheumatoid factor of multiple sites
    M05.9Rheumatoid arthritis with rheumatoid factor, unspecified
    M06.4Inflammatory polyarthropathy
    M06.9Rheumatoid arthritis, unspecified
    M13.0Polyarthritis, unspecified

    Showing 1–10 of 22

    Related Payer Policy Updates

    Specialty: Hematology/Oncology1 / 3

    10 rows

    PolicyPayerEffective Date
    Hematology - AdzynmaCigna2026-10-15
    Tumor Treating Fields for Pancreatic Cancerselect_health2026-10-01
    Axicabtagene ciloleucel (Yescarta®) coverageBaylor Scott & White Health Plan2026-10-01
    Electric Tumor Treatment Field Therapy (for Kentucky Only)UnitedHealthcare2026-10-01
    Electric Tumor Treatment Field Therapy (for Kansas Only)UnitedHealthcare2026-10-01
    Electric Tumor Treatment Field Therapy (for Idaho Only)UnitedHealthcare2026-10-01
    Brexucabtagene autoleucel (Tecartus) CoverageBaylor Scott & White Health Plan2026-10-01
    Electric Tumor Treatment Field Therapy (for Pennsylvania Only)UnitedHealthcare2026-10-01
    Epithelial Cell Cytology in Breast Cancer Risk AssessmentOscar Health2026-10-01
    Factor VIII ProductsCigna2026-09-15

    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-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)

    HCPCS-J0135-ADALIMUMAB-20MG-INJECTION

    HCPCS Level II J0135: Injection, adalimumab, 20 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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