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Bill > SB5594


WA SB5594

WA SB5594
Revised for engrossed: Concerning biosimilar medicines and interchangeable biological products.


summary

Introduced
01/30/2025
In Committee
02/25/2026
Crossed Over
03/11/2025
Passed
Dead
03/12/2026

Introduced Session

Potential new amendment
2025-2026 Regular Session

Bill Summary

AN ACT Relating to reducing prescription drug costs by 2 eliminating barriers impeding access to biosimilar medicines and 3 interchangeable biological products; and amending RCW 48.43.420, 4 41.05.410, 69.41.120, and 69.41.125. 5

AI Summary

This bill aims to reduce prescription drug costs by removing barriers to accessing biosimilar medicines and interchangeable biological products, which are less expensive versions of existing biologic drugs that have been shown to be as safe and effective. Specifically, it modifies existing laws to ensure that health plans have a clear and accessible process for patients and doctors to request exceptions to prescription drug utilization management, which are rules that control which drugs are covered. The bill also requires health plans to disclose their criteria for these management processes and sets timelines for approving or denying exception requests, with a provision that requests are automatically granted if not responded to within the specified timeframes. Furthermore, it clarifies that pharmacists can substitute therapeutically equivalent drugs or interchangeable biological products unless the prescriber explicitly states otherwise, and that such substitutions are permissible if the consumer's out-of-pocket cost is lower. The bill also mandates that qualified health plans offered through the state's health benefit exchange must increase the utilization of generic and biosimilar drugs.

Committee Categories

Health and Social Services

Sponsors (4)

Last Action

By resolution, returned to Senate Rules Committee for third reading. (on 03/12/2026)

Taxonomy

Health
  • ‐ Health Insurance Reform
  • ‐ Regulation of Drug Industry and Pharmacies

bill text


bill summary

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bill summary

Document Type Source Location Created
State Bill Page https://app.leg.wa.gov/billsummary?BillNumber=5594&Year=2025&Initiative=false 01/29/2025
Second engrossed substitute House bill report https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/House/5594-S.E2%20HBR%20HCW%2026.pdf 02/27/2026
Second engrossed substitute House bill analysis 2026 https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/House/5594-S.E2%20HBA%20HCW%2026.pdf 02/09/2026
Fiscal Note - 5594 SB (Final) https://fnspublic.ofm.wa.gov/FNSPublicSearch/GetPDF?packageID=72827 02/04/2026
BillText https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Senate%20Bills/5594-S.E2.pdf 01/21/2026
Second engrossed substitute Senate bill report https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/Senate/5594-S.E2%20SBR%20APS%2026.pdf 01/21/2026
Harris 5594-S.E AMS HARR S3416.1 https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Amendments/Senate/5594-S.E%20AMS%20HARR%20S3416.1.pdf 01/20/2026
Engrossed substitute Senate bill report https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/Senate/5594-S.E%20SBR%203RD%2026.pdf 01/19/2026
Engrossed Substitute House Bill Analysis 2025 https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/House/5594-S.E%20HBA%20HCW%2025.pdf 03/26/2025
BillText https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Senate%20Bills/5594-S.E.pdf 03/11/2025
Harris 5594-S AMS HARR S2269.1 https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Amendments/Senate/5594-S%20AMS%20HARR%20S2269.1.pdf 03/11/2025
Engrossed Substitute Senate Bill Report https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/Senate/5594-S.E%20SBR%20APS%2025.pdf 03/11/2025
BillText https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Senate%20Bills/5594-S.pdf 02/19/2025
Senate Bill Report https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/Senate/5594%20SBR%20HLTC%20OC%2025.pdf 02/18/2025
Senate Bill Report https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/Senate/5594%20SBR%20HLTC%20TA%2025.pdf 02/17/2025
Senate Bill Report (Orig.) https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bill%20Reports/Senate/5594%20SBA%20HLTC%2025.pdf 02/09/2025
BillText https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Senate%20Bills/5594.pdf 01/29/2025
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