WA SB5121

Requires group health plans (except small group plans) to cover standard fertility preservation services starting January 1, 2026, and infertility diagnosis and treatment starting January 1, 2027

Mandates coverage for two completed oocyte retrievals with unlimited embryo transfers following American Society for Reproductive Medicine guidelines, using single embryo transfer when medically appropriate

Applies to commercial group health plans, state employee health plans, and Medicaid, with prohibitions on imposing different limitations on fertility services compared to other medical services

Defines infertility broadly to include inability to establish/carry pregnancy, inability to reproduce without medical intervention (including single individuals), physician findings, or disability-related impairment

Requires fertility preservation coverage for patients facing medical treatments (such as chemotherapy, radiation, or surgery) that risk impairing fertility