Summary & Overview
HCPCS J1556: Injection, Immune Globulin (BIVIGAM), 500 mg
HCPCS Level II code J1556 designates a 500 mg unit of BIVIGAM, an intravenous immune globulin product. This code is used to report the drug component for patients receiving immune globulin therapy and is relevant to hospitals, infusion centers, and physician practices nationwide. Immune globulin therapies are used across immunology, neurology, hematology, and infectious disease indications, making accurate coding important for clinical documentation, payer adjudication, and national utilization monitoring.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find national-level context for the code, including how it maps to infusion service delivery, common sites of service, and the payer landscape influencing coverage and billing workflows. The publication summarizes benchmarks where available, highlights relevant policy and billing considerations affecting reimbursement and claims processing, and provides clinical context for use of BIVIGAM in infusion settings.
Content is intended for coders, billing managers, clinicians involved in infusion therapy, and policy analysts seeking a concise reference on HCPCS Level II code J1556 and its role in reporting immune globulin administration nationally.
Billing Code Overview
HCPCS Level II code J1556 represents an injection of immune globulin (BIVIGAM) supplied in a 500 mg dosage unit. This code denotes the drug product and is used to report administration of intravenous immune globulin when BIVIGAM is the product provided.
Service type: Drug administration (intravenous immune globulin product)
Typical site of service: Hospital outpatient infusion suite, physician office infusion center, or outpatient infusion clinic
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Clinical & Coding Specifications
Clinical Context
A 56-year-old patient with documented primary immunodeficiency presents to an ambulatory infusion center for administration of intravenous immune globulin, billed as J1556 (injection, immune globulin (Bivigam), 500 mg). The patient has prior history of recurrent sinopulmonary infections and laboratory confirmation of hypogammaglobulinemia. The clinical workflow includes verification of physician order, pre-infusion vitals and allergy screening by a registered nurse, review of premedication need (acetaminophen or antihistamine) and necessary consent, placement of intravenous access, reconstitution/dosing of Bivigam to the prescribed total grams, administration via infusion pump with incremental rate escalation under nursing monitoring for infusion-related reactions, documentation of lot number and vial discard information, and post-infusion observation before discharge. Billing captures the HCPCS Level II code J1556 per 500 mg unit supplied, with applicable modifiers for payment or situational reporting. Typical sites of service include hospital outpatient infusion centers, freestanding infusion clinics, and physician office infusion suites. Common concurrent services in the encounter include IV catheter insertion and monitoring by nursing staff, but drug administration is reported via the HCPCS code rather than an infusion CPT for drug itself.
Coding Specifications
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