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HCPCS J1459: Intravenous Immune Globulin (Privigen), 500 mg

HCPCS Level II code J1459 denotes intravenous immune globulin (Privigen), non-lyophilized (liquid), billed per 500 mg unit. This code captures the drug supply component for infusion of a plasma-derived immunoglobulin product commonly used for immune modulation and replacement therapy across a range of clinical indications. Nationally, accurate use of J1459 affects drug cost reporting, prior authorization workflows, and facility charge capture for infusion services.

Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for Privigen infusions, common sites of service where J1459 is billed, and typical billing considerations tied to unit-based drug coding. The publication outlines benchmarks for utilization and coverage trends where available, summarizes relevant policy updates that influence prior authorization and billing practices, and highlights operational implications for infusion centers and clinician practices.

This brief serves clinicians, coding and billing staff, and policy analysts seeking a national-level reference on the coding and service context for intravenous immune globulin using HCPCS Level II code J1459. Data not available in the input.

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Billing Code Overview

HCPCS Level II code J1459 describes the intravenous administration of immune globulin (Privigen), non-lyophilized (liquid), in 500 mg units. The service is an intravenous infusion of a plasma-derived immunoglobulin product supplied in liquid form.

Service type: Intravenous immune globulin infusion
Typical site of service: Hospital outpatient infusion centers, physician offices, and infusion clinics

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HCPCS J1459: Intravenous Immune Globulin (Privigen), 500 mg

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Get alerted when payer policies referencing J1459 are released or updated.

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Billing Code Overview

Service type: Intravenous immune globulin infusion
Typical site of service: Hospital outpatient infusion centers, physician offices, and infusion clinics

Clinical & Coding Specifications

Clinical Context

A 56-year-old patient with chronic inflammatory demyelinating polyneuropathy (CIDP) presents for outpatient infusion of intravenous immune globulin product Privigen. The patient arrives to the ambulatory infusion center with an order from a neurology specialist documenting diagnosis, dosing (grams/kg based on weight), and infusion parameters. Nursing obtains vital signs, reviews allergies and pre-medications (acetaminophen, diphenhydramine, or corticosteroid as ordered), starts an intravenous line, and programs an infusion pump for a calculated infusion rate per manufacturer guidelines. The infusion of J1459 (immune globulin, Privigen, 500 mg vials) is administered intravenously with periodic monitoring for infusion-related reactions (headache, fever, hypotension, anaphylaxis). Post-infusion observation occurs for 30–60 minutes. Documentation includes product lot number, total milligrams administered (number of J1459 units billed), start and stop times, infusion rate changes, pre- and post-vital signs, and clinician signature. Typical sites of service include an ambulatory infusion center, physician office with infusion capability, or outpatient hospital infusion suite.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When additional clinical work or time beyond usual infusion complexity is documented (e.g., complex vascular access, prolonged monitoring).
`25`	Significant, separately identifiable E/M service	When a distinct evaluation and management visit is provided on the same day as the infusion and documented separately.
`52`	Reduced services	When the ordered IVIG dose or administration time is partially reduced and documented.
`53`	Discontinued procedure	When infusion is started but discontinued due to a documented adverse reaction or other valid reason.
`59`	Distinct procedural service	When another unrelated procedure or service is performed on the same day that is unrelated to the infusion.
`76`	Repeat procedure by same provider	When the same provider repeats an infusion procedure later the same day.
`78`	Unplanned return to the procedure room by the same provider following initial procedure for a related complication	When the patient requires an unplanned return for management of an infusion complication.
`JW`	Drug or biological amount discarded/not administered	When a portion of opened Privigen is discarded and must be reported per payer requirements.
`JZ`	No drug administered	When the ordering drug was not administered after preparation and documentation supports this.
`GA`	Waiver of liability statement on file, expected to pay	When a voluntary payer-specific advance beneficiary notice or waiver is documented for non-covered IVIG uses.
`GZ`	Item or service expected to be denied as not reasonable and necessary	When the service is provided but not expected to be covered and denial is anticipated.
`KX`	Requirements specified in the medical policy have been met	When payer medical policy criteria for IVIG (e.g., diagnosis, prior authorization, weight-based dosing) are documented.
`QX`	Certified registered nurse anesthetist furnished service with medical direction by a physician (when applicable)	Rarely used; when anesthesia services related to infusion administration are provided under specific supervision rules.
`59`	Distinct procedural service	When coding needs to separate services provided the same day (listed above for emphasis).

Taxonomy Code	Specialty	Notes
`207R00000X`	Neurology	Neurologists commonly order IVIG for immune-mediated neuropathies such as CIDP and GBS.
`363LF0000X`	Hematology/Oncology	Hematologists treat immune cytopenias or other immune-mediated hematologic conditions requiring IVIG.
`208000000X`	Allergy & Immunology	Allergists/immunologists manage primary immune deficiency disorders for which IVIG is indicated.
`261QM0800X`	Infusion Therapy	Infusion nurses and specialists administer and monitor IVIG infusions in outpatient settings.
`207T00000X`	Physical Medicine & Rehabilitation	PM&R physicians may use IVIG in certain neuromuscular autoimmune conditions and coordinate treatment.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`G61.81`	Chronic inflammatory demyelinating polyneuropathy	A primary neurologic indication for IVIG therapy such as Privigen.
`G61.0`	Guillain-Barré syndrome	IVIG is a standard acute therapy for GBS to reduce disease progression.
`D69.3`	Immune thrombocytopenic purpura (ITP)	IVIG is used to rapidly raise platelet counts in acute ITP.
`D80.1`	Selective deficiency of immunoglobulin A	Primary immunodeficiency conditions may require IVIG replacement therapy.
`D80.0`	Hereditary hypogammaglobulinemia	Replacement therapy with IVIG is indicated for clinically significant hypogammaglobulinemia.
`M35.9`	Systemic involvement of connective tissue disease, unspecified	Autoimmune connective tissue diseases with severe immune-mediated manifestations may be treated with IVIG in select cases.
`M35.3`	Polymyositis	Certain autoimmune myopathies may receive IVIG when refractory to first-line therapy.
`G72.89`	Other specified myopathies	Immune-mediated myopathies treated with IVIG are captured here when specific codes are not used.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`96413`	Chemotherapy administration, IV infusion, each additional hour (list separately in addition to code for primary infusion)	Used to bill additional infusion time when IVIG infusion extends beyond the base unit time in outpatient infusion settings.
`96365`	Intravenous infusion, therapy, prophylaxis, or diagnosis; initial, up to 1 hour	Often used for the initial hour of therapeutic IV infusion when facility/clinic bills infusion administration services alongside the drug HCPCS.
`96366`	Intravenous infusion, each additional hour (list separately in addition to code for primary infusion)	Billed for each additional hour of infusion time after the initial hour when infusion duration exceeds one hour.
`36415`	Collection of venous blood by venipuncture	Performed for baseline labs, monitoring (e.g., CBC, chemistry) before or during IVIG therapy.
`36591`	Injection of pharmacologic/biological agent, venous access port, with or without catheter placement	Billed when a long-term vascular access device is accessed for IVIG infusion in patients with indwelling ports.
`99070`	Supplies and materials (e.g., saline flushes, IV sets) provided by the physician	Used to report non-covered supplies used during infusion that may not be included in the drug or facility fee.

Related Codes

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

HCPCS Level II J0013: Esketamine Nasal Spray, 1 mg

HCPCS-J0120-INJECTION-TETRACYCLINE-250MG

HCPCS J0120: Injection, Tetracycline, Up to 250 mg

HCPCS-J0121-OMADACYCLINE-INJECTION-1MG

HCPCS J0121: Omadacycline Injection, 1 mg

HCPCS-J0122-ERAVACYCLINE-INJECTION-1MG

HCPCS J0122: Injection, Eravacycline, 1 mg

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

HCPCS 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 J0131: Injection Acetaminophen, 10 mg

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

HCPCS J0132: Injection, Acetylcysteine 100 mg

HCPCS-J0133-ACYCLOVIR-INJECTION-5MG

HCPCS J0133: Injection, Acyclovir 5 mg

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

HCPCS J0134: Injection, Acetaminophen (Fresenius Kabi), 10 mg

Showing 1–10 of 991

References

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.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.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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Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When additional clinical work or time beyond usual infusion complexity is documented (e.g., complex vascular access, prolonged monitoring).
`25`	Significant, separately identifiable E/M service	When a distinct evaluation and management visit is provided on the same day as the infusion and documented separately.
`52`	Reduced services	When the ordered IVIG dose or administration time is partially reduced and documented.
`53`	Discontinued procedure	When infusion is started but discontinued due to a documented adverse reaction or other valid reason.
`59`	Distinct procedural service	When another unrelated procedure or service is performed on the same day that is unrelated to the infusion.
`76`	Repeat procedure by same provider	When the same provider repeats an infusion procedure later the same day.
`78`	Unplanned return to the procedure room by the same provider following initial procedure for a related complication	When the patient requires an unplanned return for management of an infusion complication.
`JW`	Drug or biological amount discarded/not administered	When a portion of opened Privigen is discarded and must be reported per payer requirements.
`JZ`	No drug administered	When the ordering drug was not administered after preparation and documentation supports this.
`GA`	Waiver of liability statement on file, expected to pay	When a voluntary payer-specific advance beneficiary notice or waiver is documented for non-covered IVIG uses.
`GZ`	Item or service expected to be denied as not reasonable and necessary	When the service is provided but not expected to be covered and denial is anticipated.
`KX`	Requirements specified in the medical policy have been met	When payer medical policy criteria for IVIG (e.g., diagnosis, prior authorization, weight-based dosing) are documented.
`QX`	Certified registered nurse anesthetist furnished service with medical direction by a physician (when applicable)	Rarely used; when anesthesia services related to infusion administration are provided under specific supervision rules.
`59`	Distinct procedural service	When coding needs to separate services provided the same day (listed above for emphasis).

Taxonomy Code	Specialty	Notes
`207R00000X`	Neurology	Neurologists commonly order IVIG for immune-mediated neuropathies such as CIDP and GBS.
`363LF0000X`	Hematology/Oncology	Hematologists treat immune cytopenias or other immune-mediated hematologic conditions requiring IVIG.
`208000000X`	Allergy & Immunology	Allergists/immunologists manage primary immune deficiency disorders for which IVIG is indicated.
`261QM0800X`	Infusion Therapy	Infusion nurses and specialists administer and monitor IVIG infusions in outpatient settings.
`207T00000X`	Physical Medicine & Rehabilitation	PM&R physicians may use IVIG in certain neuromuscular autoimmune conditions and coordinate treatment.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`G61.81`	Chronic inflammatory demyelinating polyneuropathy	A primary neurologic indication for IVIG therapy such as Privigen.
`G61.0`	Guillain-Barré syndrome	IVIG is a standard acute therapy for GBS to reduce disease progression.
`D69.3`	Immune thrombocytopenic purpura (ITP)	IVIG is used to rapidly raise platelet counts in acute ITP.
`D80.1`	Selective deficiency of immunoglobulin A	Primary immunodeficiency conditions may require IVIG replacement therapy.
`D80.0`	Hereditary hypogammaglobulinemia	Replacement therapy with IVIG is indicated for clinically significant hypogammaglobulinemia.
`M35.9`	Systemic involvement of connective tissue disease, unspecified	Autoimmune connective tissue diseases with severe immune-mediated manifestations may be treated with IVIG in select cases.
`M35.3`	Polymyositis	Certain autoimmune myopathies may receive IVIG when refractory to first-line therapy.
`G72.89`	Other specified myopathies	Immune-mediated myopathies treated with IVIG are captured here when specific codes are not used.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`96413`	Chemotherapy administration, IV infusion, each additional hour (list separately in addition to code for primary infusion)	Used to bill additional infusion time when IVIG infusion extends beyond the base unit time in outpatient infusion settings.
`96365`	Intravenous infusion, therapy, prophylaxis, or diagnosis; initial, up to 1 hour	Often used for the initial hour of therapeutic IV infusion when facility/clinic bills infusion administration services alongside the drug HCPCS.
`96366`	Intravenous infusion, each additional hour (list separately in addition to code for primary infusion)	Billed for each additional hour of infusion time after the initial hour when infusion duration exceeds one hour.
`36415`	Collection of venous blood by venipuncture	Performed for baseline labs, monitoring (e.g., CBC, chemistry) before or during IVIG therapy.
`36591`	Injection of pharmacologic/biological agent, venous access port, with or without catheter placement	Billed when a long-term vascular access device is accessed for IVIG infusion in patients with indwelling ports.
`99070`	Supplies and materials (e.g., saline flushes, IV sets) provided by the physician	Used to report non-covered supplies used during infusion that may not be included in the drug or facility fee.

Related Codes

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

HCPCS Level II J0013: Esketamine Nasal Spray, 1 mg

HCPCS-J0120-INJECTION-TETRACYCLINE-250MG

HCPCS J0120: Injection, Tetracycline, Up to 250 mg

HCPCS-J0121-OMADACYCLINE-INJECTION-1MG

HCPCS J0121: Omadacycline Injection, 1 mg

HCPCS-J0122-ERAVACYCLINE-INJECTION-1MG

HCPCS J0122: Injection, Eravacycline, 1 mg

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

HCPCS 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 J0131: Injection Acetaminophen, 10 mg

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

HCPCS J0132: Injection, Acetylcysteine 100 mg

HCPCS-J0133-ACYCLOVIR-INJECTION-5MG

HCPCS J0133: Injection, Acyclovir 5 mg

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

HCPCS J0134: Injection, Acetaminophen (Fresenius Kabi), 10 mg

Showing 1–10 of 991

References

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.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.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.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.