Washington state health insurance laws set the floor for what every plan sold in the state must cover, cap what you can be billed when care goes out-of-network, protect your right to appeal a denied claim, and control when an insurer can drop you. The Office of the Insurance Commissioner (OIC) licenses insurers, reviews premiums, and investigates consumer complaints. In several areas — contraception, balance billing, and the Cascade Care public option among them — Washington goes further than federal law requires.
What Every Health Plan Must Cover
Individual and small group plans in Washington must cover the ten essential health benefit categories set by the Affordable Care Act, including hospitalization, emergency care, maternity, mental health, prescription drugs, and preventive services. The OIC selects the benchmark plan that defines the scope of those benefits under RCW 48.43.715, and no plan can be sold unless the commissioner finds it substantially equal to the benchmark.1Washington State Legislature. Washington Code 48.43.715 – Individual and Small Group Market Essential Health Benefits Hearing instruments and associated services are part of that benchmark.
Contraception and Reproductive Health
Every health plan must cover all FDA-approved contraceptive drugs, devices, and products with no copays, deductibles, or other cost-sharing under RCW 48.43.072. That includes over-the-counter options like condoms without a prescription, voluntary sterilization, and related consultations. Insurers cannot penalize you for switching methods within a 12-month period, and plans must also cover fertility preservation when a medical treatment may impair reproductive capacity.2Washington State Legislature. Washington Code 48.43.072 – Required Reproductive Health Care
Mental Health and Substance Use
Washington requires insurers to cover mental health and substance use disorder services on equal terms with medical and surgical care. The legislature recently overhauled the framework through House Bill 1432, repealing older parity statutes and consolidating the requirements into chapter 48.43 RCW. The revised law strengthens compliance so insurers cannot impose stricter visit limits, higher cost-sharing, or more burdensome prior authorization on behavioral health services than on comparable medical care.3Washington State Legislature. Engrossed Second Substitute House Bill 1432
Telehealth
Plans issued or renewed since January 1, 2017 must reimburse providers for covered telehealth services on the same basis as in-person visits, so long as the service is medically necessary and qualifies as an essential health benefit. Approved originating sites include hospitals, physician offices, community mental health centers, rural health clinics, and federally qualified health centers.4Washington State Legislature. Washington Code 48.43.735 – Reimbursement of Health Care Services Provided Through Telemedicine or Store and Forward Technology
Protection From Surprise Medical Bills
Balance billing is what happens when an out-of-network provider bills you for the difference between what your insurer paid and the provider’s full charge. In an emergency, or when you had no realistic choice of who treated you at an in-network hospital, those bills used to run into the thousands.
Washington’s Balance Billing Protection Act (RCW 48.49.020) prohibits out-of-network providers from balance billing you for emergency services or for care at an in-network hospital or surgical facility when you could not choose an in-network provider. Your insurer must hold you harmless and apply the same cost-sharing as if the provider were in-network. The most a nonparticipating provider can bill you is the in-network cost-sharing amount.5Washington State Legislature. Washington Code 48.49 – Balance Billing Protection Act
The federal No Surprises Act, in effect since January 2022, layers similar protections on top. It bars balance billing for emergency services regardless of network status, requires insurers to cover those services without prior authorization at in-network cost-sharing levels, and counts what you pay toward your in-network deductible and out-of-pocket maximum.6Office of the Law Revision Counsel. 42 USC 300gg-111 – Preventing Surprise Medical Bills People covered by Medicare, Medicaid, VA, or TRICARE have their own separate federal protections and are not covered by the No Surprises Act.
Enrollment, Subsidies, and When You Can Be Dropped
Open Enrollment and Special Enrollment
Open enrollment runs November 1 through December 31 each year for coverage starting January 1, through Washington Healthplanfinder.7Washington Healthplanfinder. Enrollment Periods Miss that window and you generally cannot enroll in an individual plan until the next year unless a qualifying life event opens a 60-day special enrollment period. Qualifying events include:
- Household changes: marriage, divorce, having or adopting a child, or the death of a policyholder
- Loss of coverage: losing employer-sponsored insurance, aging off a parent’s plan at 26, or losing Medicaid or CHIP eligibility
- Job changes: losing or changing employment, losing COBRA coverage, or an employer beginning to offer a qualified reimbursement arrangement
- Moving to an area with different plan options or networks
- Becoming a U.S. citizen, gaining tribal membership, or experiencing a marketplace enrollment error
You may need documentation such as a marriage certificate, birth certificate, or termination letter from a prior insurer.8Washington Healthplanfinder. Open Enrollment vs. Special Enrollment
Premium Tax Credits and Cost-Sharing Reductions
If your household income is between 100% and 400% of the federal poverty level, you can receive a premium tax credit through Washington Healthplanfinder, calculated on a sliding scale so higher-income households pay a larger share of income toward the benchmark silver plan. The enhanced federal subsidies from the Inflation Reduction Act expired at the end of 2025, and Congress did not extend them, so beginning in 2026 subsidies are less generous and are no longer available to people earning above 400% of the federal poverty level.9Congressional Research Service. Enhanced Premium Tax Credit and 2026 Exchange Premiums
People between 100% and 250% of FPL who enroll in a silver plan also get cost-sharing reductions that lower deductibles, copays, and out-of-pocket maximums. Between 100–150% FPL the insurer effectively covers 94% of total costs, between 150–200% FPL 87%, and between 200–250% FPL 73%.10Office of the Law Revision Counsel. 42 USC 18071 – Reduced Cost-Sharing for Individuals Enrolling in Qualified Health Plans
Apple Health
Apple Health, Washington’s Medicaid program, provides free or very low-cost coverage to residents who meet income limits. For adults aged 19 through 64, a single person qualifies with monthly income up to $1,800, rising to $2,433 for a household of two, $3,065 for three, and $3,697 for four. Figures are adjusted each April.11Washington State Health Care Authority. Individual Adults – Apple Health Unlike marketplace plans, Apple Health enrollment is open year-round.
When an Insurer Can Cancel Your Coverage
Insurers cannot drop you at will. Under RCW 48.43.035, the permitted reasons are nonpayment of premiums, fraud, material breach of the plan, failure to enroll in Medicare when eligible, violation of the carrier’s published policies, or a change in law that prevents the plan from being offered.12Washington State Legislature. Washington Code 48.43.035 – Group Health Benefit Plans If you receive federal premium subsidies, you get a 90-day grace period before coverage ends for nonpayment, and your plan stays active for at least the first 30 days of that period. The insurer must notify you before cancellation so you have time to fix the issue or find other coverage.
Cascade Care Standardized Plans
Washington is one of a small number of states with a public option on its marketplace. Cascade Care requires every insurer selling qualified health plans on Washington Healthplanfinder to offer standardized plans at the bronze, silver, and gold levels in each county where it operates. The standardized designs are meant to reduce deductibles, make more services available before the deductible, and get more value out of available subsidies.13Washington State Legislature. Washington Code 43.71.095 – Standardized Health Plans
Cascade Select plans go further by contracting with providers at state-set reimbursement rates. The Washington Health Benefit Exchange runs the program with the OIC and the Health Care Authority.14Washington Health Benefit Exchange. Cascade Care If plans on the marketplace look unusually similar to one another, that is why. The uniform design is intentional and makes side-by-side comparison easier.
Your Rights When a Claim Is Denied
Disclosure Before You Buy
Before selling you a plan, insurers must offer a detailed breakdown of covered benefits, exclusions and limitations, prescription drug policies, cost-sharing amounts, confidentiality practices, grievance procedures, and provider network information. RCW 48.43.510 applies whether you buy on your own, through an employer, or through an agent.15Washington State Legislature. Washington Code 48.43.510 – Carrier Required to Disclose Health Plan Information
Independent External Review
If your insurer denies a claim and you disagree, you have the right to an independent external review once you have exhausted the insurer’s internal appeal. Under RCW 48.43.535, the OIC maintains a rotational registry of certified independent review organizations, matched to disputes based on medical expertise. The reviewer examines whether the denial was justified on medical necessity, appropriateness, or level of care. The insurer must turn over all relevant records and decision documents within three business days of receiving the review request, and you have at least five business days to submit additional information.16Washington State Legislature. Washington Code 48.43.535 – Independent Review of Health Care Disputes The external review costs you nothing to use, and many wrongly denied claims get overturned this way.
Unreasonable Denials and the Right to Sue
Washington law prohibits insurers from unreasonably denying a claim for coverage or payment of benefits. RCW 48.30.010 gives the OIC authority to define and enforce unfair practices.17Washington State Legislature. Washington Code 48.30.010 – Unfair Practices in General If an insurer unreasonably denies your claim, RCW 48.30.015 lets you sue in superior court for actual damages plus reasonable attorney’s fees and litigation costs.18Washington State Legislature. Washington Code 48.30.015 – Unreasonable Denial of a Claim for Coverage or Payment of Benefits
Filing a Complaint With the OIC
If you believe your insurer has violated any of these rules, you can file a complaint with the OIC online or by calling 800-562-6900 during business hours (Monday through Friday, 8:30 a.m. to 4:30 p.m.). A TDD/TTY line is available at 360-586-0241 for people with hearing or speech impairments.19Office of the Insurance Commissioner. File a Complaint or Check Your Complaint Status Filing is free, and the OIC investigates whether the insurer’s conduct violated Washington law. A complaint alone does not guarantee a specific outcome for your claim, but it puts the insurer on the OIC’s radar and can trigger broader enforcement if a pattern emerges.