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    v1.0.28
    OpenPayerBilling CodesChemotherapy DrugsHCPCS hcpcs-j9185-fludarabine-injection-50mg
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    HCPCS Level II J9185: Fludarabine Phosphate Injection, 50 mg

    HCPCS Level II code J9185 represents an injection of fludarabine phosphate, 50 mg, typically billed for chemotherapy infusion services provided in an infusion center or hospital outpatient setting; the code identifies the specific drug product and dosage for clinical documentation and claims submission related to systemic cancer therapy.

    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), Antibody-Drug Conjugates.

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    Clinical & Coding Specifications

    Clinical Context

    Medication: J9185 — injection, fludarabine phosphate, 50 mg.

    A typical patient is a 62-year-old adult with chronic lymphocytic leukemia (CLL) or low-grade non-Hodgkin lymphoma receiving inpatient or outpatient intravenous chemotherapy. The patient presents to an oncology infusion center or hospital oncology unit after a hematology/oncology clinic visit where fludarabine-based therapy was prescribed as part of single-agent therapy or combination chemotherapy (for example, with cyclophosphamide and rituximab). Prior to infusion, the oncology nurse verifies order accuracy, premedication needs, current labs (complete blood count with differential, creatinine, and liver function tests), and obtains informed consent. Access is established via peripheral IV or implanted port; dose is calculated by weight/body surface area and appropriate dilution and infusion set-up are completed by pharmacy under sterile conditions. During infusion, vital signs and cytopenia risk are monitored; adverse reactions (fever, chills, neurotoxicity, severe myelosuppression) are assessed and documented. Post-infusion, the site documents medication administration, lot number, and any immediate reactions. Billing captures the drug HCPCS code J9185 per 50 mg increment, the appropriate place of service (typically outpatient hospital outpatient department or physician office infusion center), and any applicable modifiers reflecting circumstances of service delivery.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    96413Chemotherapy administration, intravenous infusion technique; each additional sequential infusion of a single drug, up to 1 hour (list separately in addition to primary)Often billed when fludarabine infusion extends and multiple sequential drug infusions occur during a single encounter.
    96415Chemotherapy administration, intravenous infusion technique; each additional hour (List separately in addition to primary service)Used if fludarabine infusion duration exceeds standard infusion time and additional hourly monitoring is billed.
    96417Chemotherapy administration, intravenous infusion technique; additional sequential infusion, more than 8 hours (per time rules)Applied when prolonged infusion or continuous infusion regimens require extended administration time.
    99199Unlisted anesthesia procedure (or facility-specific unlisted code)Occasionally used by facilities for reporting nonstandard infusion-related services when no specific CPT exists (facility-specific use).
    36415Collection of venous blood by venipuncturePerformed prior to chemotherapy to obtain labs required for safe administration; commonly performed same day as fludarabine infusion.
    36561Replacement, subcutaneous port or pump, with subcutaneous pocket creation (if needed)Related when implanted ports are placed or revised to provide long-term vascular access for fludarabine and other chemotherapy agents.

    Related Modifiers

    6 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…

    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…
    363L00000XNurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision mak…
    208000000XPediatrics PhysicianA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
    363A00000XPhysician AssistantA physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
    251B00000XCase Management AgencyAn organization that is responsible for providing case management services. The agency provides services which assist an individual in gaining access…
    207ZN0500XNeuropathology PhysicianA neuropathologist is expert in the diagnosis of diseases of the nervous system and skeletal muscles and functions as a consultant primarily to neurol…
    1835N1003XNutrition Support PharmacistA licensed pharmacist who has demonstrated specialized knowledge and skill in maintenance and/or restoration of optimal nutritional status, designing …
    2085H0002XHospice and Palliative Medicine (Radiology) PhysicianA radiologist with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specia…

    Related Payer Policy Updates

    Specialty: Hematology/Oncology1 / 3

    4 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
    Antibody-Drug ConjugatesPremera Bluecross2026-08-01
    Umbilical Cord Blood Harvesting and Storage for Future Use (for Indiana Only)UnitedHealthcare2026-08-01

    Related Codes

    HCPCS-J9000-DOXORUBICIN-10MG-INJECTION

    HCPCS J9000: Doxorubicin Hydrochloride Injection, 10 mg

    HCPCS-J9003-LEUPROLIDE-INJECTABLE-CAMCEVI-1MG

    HCPCS Level II J9003: Leuprolide injectable (camcevi etm), 1 mg

    HCPCS-J9010-ALEMTUZUMAB-INJECTION-10MG

    HCPCS Level II J9010: Injection, alemtuzumab, 10 mg

    HCPCS-J9011-DATOPOTAMAB-DERUXTECAN-INJECTION-1MG

    HCPCS J9011: Datopotamab Deruxtecan Injection, 1 mg

    HCPCS-J9015-ALDESLEUKIN-INJECTION-SINGLE-USE-VIAL

    HCPCS Level II J9015: Aldesleukin Injection, Single-Use Vial

    HCPCS-J9017-ARSENIC-TRIOXIDE-INJECTION-1MG

    HCPCS J9017: Arsenic Trioxide Injection, 1 mg

    HCPCS-J9019-ASPARAGINASE-ERWINAZE-INJECTION-1000-IU

    HCPCS Level II J9019: Asparaginase (Erwinaze) Injection, 1,000 IU

    HCPCS-J9020-ASPARAGINASE-INJECTION-10000-UNITS

    HCPCS J9020: Asparaginase Injection, 10,000 Units

    HCPCS-J9021-ASPARAGINASE-RYLAZE-INJECTION-0-1-MG

    HCPCS Level II J9021: Injection, asparaginase (Rylaze), 0.1 mg

    HCPCS-J9022-ATEZOLIZUMAB-INJECTION-10MG

    HCPCS J9022: Injection, atezolizumab 10 mg

    Showing 1–10 of 227

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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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