## **What is S9502 home infusion therapy?**
HCPCS code S9502 is used to report home infusion therapy for antibiotics, per day. This code represents the administrative services and professional pharmacy services required to deliver infusion therapy at home. It includes care coordination and all necessary supplies and equipment, but does not cover drugs and nursing visits, which are billed separately on a per diem basis.
S9502 applies to antibiotic, antiviral, or antifungal therapy provided in a home setting. It ensures proper reimbursement for the behind-the-scenes work that makes infusion therapy possible, such as pharmacy preparation, monitoring, and coordination with nursing services. Nursing visits, when required, must be billed separately using the appropriate nursing services codes, while the medication itself is billed under its specific HCPCS code.
This diem code is essential for supporting the comprehensive process of home infusion therapy, ensuring patients receive safe and effective treatment outside of traditional clinical environments.
## **Documentation guidelines**
When billing S9502, code for home infusion therapy, it is important that your notes clearly support why the patient requires home infusion therapy every 8 hours.
Since this code already includes administrative services, pharmacy support, care coordination, and supplies/equipment, your documentation should reflect these elements while separating out drug costs and nursing visits coded separately, which are billed under different codes.
Key points to include:
- **Clinical justification**: Specify the infection type and why home infusion (antibiotic/antiviral/antifungal) is required instead of inpatient care.
- **Pharmacy & administrative services**: Note preparation, delivery, and coordination between the care team.
- **Supplies/equipment**: List the pump, tubing, dressings, or other items used.
- **Nursing visits & drugs**: Make clear that these are documented separately.
- **Timing**: Record start/end times for each 8-hour infusion to confirm frequency.
## **S9502 billing requirements**
When billing HCPCS Code S9502, keep in mind the following key points to streamline reimbursement and ensure compliance:
- **Per-diem billing structure**: S9502 includes all administrative services, professional pharmacy services, care coordination, and necessary supplies/equipment. It does not cover drugs or nursing visits, which must be billed under separate HCPCS/CPT codes.
- **Medicare home infusion benefit eligibility**: Under the 21st Century Cures Act, beginning January 1, 2021, Medicare began covering these professional services when provided by a qualified home infusion supplier.
- **Payment categories**: Providers bill using S9502 for subcutaneous or intravenous infusions in the patient’s home. Claims must align with infusion drug administration calendar-day requirements.
- **Fee schedules**: Payer reimbursement varies. Medicare and Medicaid rates depend on geographic area and MAC policies.
- **Claim submission best practices**: Use the appropriate place of service based on where services were administered. For hospital outpatient billing, ensure you don’t duplicate charges for shared services with the referring physician.
## **Other relevant codes**
The following codes may be relevant to HCPCS code S9502, depending on the specific drug, supplies, and professional services required.
- S9500 – Home infusion therapy, antibiotic, antiviral, or antifungal therapy; once every 24 hours; administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
- S9501 – Home infusion therapy, antibiotic, antiviral, or antifungal therapy; once every 12 hours; administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
Frequently asked questions
