The "Preserving Patient Access to Home Infusion Act" seeks to enhance and clarify Medicare coverage for home infusion therapy. It amends the Social Security Act to explicitly include pharmacy services within the definition of home infusion therapy, encompassing assessments, drug preparation and compounding, and coordination of care, thereby providing more comprehensive support for patients. The bill also introduces several adjustments to the payment structure for home infusion services. It clarifies that payment for an infusion drug administration day applies to each day a drug is administered, irrespective of a supplier's physical presence. A transitional rule for 2026-2030 ensures the single payment amount reflects 5 hours of infusion, while a special rule sets payment at 50% when a supplier is not physically present. Furthermore, the legislation expands the types of providers who can establish and review home infusion plans of care to include nurse practitioners and physician assistants , alongside physicians. Significantly, the Act modifies the definition of a home infusion drug to include " specified non-pump drugs or biologicals ," specifically intravenously administered antibacterial, antifungal, or antiviral medications not requiring a durable medical equipment pump. It clarifies that associated nursing and pharmacy services for these non-pump drugs will be paid for, even if the drug itself isn't directly payable under Medicare Part B. Finally, the bill establishes a special payment rule preventing separate Medicare Part B payments for certain home infusion supplies, such as tubing and catheters, when furnished on the same day as home infusion therapy paid under the consolidated payment system. All these amendments are slated to take effect on January 1, 2026 .