Summary & Overview
HCPCS S9490: Home Corticosteroid Infusion Administration and Care Coordination
HCPCS Level II code S9490 designates per diem administrative and professional pharmacy services for home-based corticosteroid infusion therapy, including care coordination and necessary supplies and equipment. The code is used when the infusion drugs and any nursing visits are billed separately. Nationally, this code matters as home infusion expands as an alternative to inpatient or clinic-based administration, affecting pharmacy services, care coordination workflows, and payers' coverage policies.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code's clinical and billing context, payer coverage considerations, and typical service settings. The publication outlines commonly used modifiers, identifies gaps where input data is not provided, and summarizes expected interactions between drug billing and per diem administrative coding. It also provides benchmarks and policy update highlights where available and notes when data is not available in the input. The goal is to give clinicians, billing professionals, and policy analysts a clear, national-level reference for use of S9490 in home infusion corticosteroid administration.
Billing Code Overview
HCPCS Level II code S9490 describes home infusion therapy for corticosteroid infusion provided on a per diem basis. The code covers administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment; the actual drugs and nursing visits are billed separately.
Service type: Home infusion therapy administration and care coordination for corticosteroid infusions.
Typical site of service: Patient's home.
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with refractory rheumatoid arthritis and frequent disease flares is referred for home corticosteroid infusion therapy to manage acute exacerbations and avoid hospital admission. The patient requires daily per diem administrative and professional pharmacy services including medication preparation, care coordination, infusion supplies, and oversight by a pharmacist and home health nurse. The workflow begins with a physician order for home infusion using code S9490, prior authorization as needed, pharmacist verification of the corticosteroid regimen, scheduling of a home nursing visit for IV line placement and monitoring, delivery of supplies and medication (drug itself billed separately), documentation of each per diem visit in the home health record, and routine communication with the prescribing physician for dose adjustments and adverse event management. Typical sites of service are the patient’s private residence or long-term care facility with nursing support available for IV administration and monitoring.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
CG | Data not available in the input. | Data not available in the input. |
26 |